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12451401142220 = 2258531361536267
BaseRepresentation
bin1011010100110001000101…
…0101111000111111001100
31122002100020112222001012102
42311030101111320333030
53113000432143022340
642252032243054232
72423404220300015
oct265142125707714
948070215861172
1012451401142220
113a70678379127
1214911b9071378
136c4215159281
1431091860000c
15168d521cc215
hexb5311578fcc

12451401142220 has 48 divisors (see below), whose sum is σ = 26197880169888. Its totient is φ = 4971057116160.

The previous prime is 12451401142177. The next prime is 12451401142241. The reversal of 12451401142220 is 2224110415421.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22950527 + ... + 23486793.

It is an arithmetic number, because the mean of its divisors is an integer number (545789170206).

Almost surely, 212451401142220 is an apocalyptic number.

12451401142220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12451401142220 is an abundant number, since it is smaller than the sum of its proper divisors (13746479027668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12451401142220 is a wasteful number, since it uses less digits than its factorization.

12451401142220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538490 (or 538488 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

Adding to 12451401142220 its reverse (2224110415421), we get a palindrome (14675511557641).

The spelling of 12451401142220 in words is "twelve trillion, four hundred fifty-one billion, four hundred one million, one hundred forty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 853 1361 1706 2722 3412 4265 5444 6805 8530 13610 17060 27220 536267 1072534 1160933 2145068 2321866 2681335 4643732 5362670 5804665 10725340 11609330 23218660 457435751 729859387 914871502 1459718774 1829743004 2287178755 2919437548 3649296935 4574357510 7298593870 9148715020 14597187740 622570057111 1245140114222 2490280228444 3112850285555 6225700571110 12451401142220