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21214036503460 = 2255307111998643
BaseRepresentation
bin1001101001011010001110…
…00111000010101110100100
32210010001010200022212112201
410310231013013002232210
510240032321321102320
6113041332133424244
74316443413026353
oct464550707025644
983101120285481
1021214036503460
116839905614a09
122467509a9b084
13bab62391b798
14534a9ca4199a
1526bc5beb570a
hex134b471c2ba4

21214036503460 has 24 divisors (see below), whose sum is σ = 44549582890176. Its totient is φ = 8485594366560.

The previous prime is 21214036503427. The next prime is 21214036503467. The reversal of 21214036503460 is 6430563041212.

Adding to 21214036503460 its reverse (6430563041212), we get a palindrome (27644599544672).

It is not an unprimeable number, because it can be changed into a prime (21214036503467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9614899 + ... + 11613541.

It is an arithmetic number, because the mean of its divisors is an integer number (1856232620424).

Almost surely, 221214036503460 is an apocalyptic number.

21214036503460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21214036503460 is an abundant number, since it is smaller than the sum of its proper divisors (23335546386716).

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

21214036503460 is a wasteful number, since it uses less digits than its factorization.

21214036503460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529363 (or 2529361 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 21214036503460 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred three thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 530711 1061422 1998643 2122844 2653555 3997286 5307110 7994572 9993215 10614220 19986430 39972860 1060701825173 2121403650346 4242807300692 5303509125865 10607018251730 21214036503460