Search a number
-
+
68587501892 = 22713188427203
BaseRepresentation
bin111111111000001000…
…100011100101000100
320120000222111002201212
4333320020203211010
52110431400030032
651301512110552
74645443101240
oct777010434504
9216028432655
1068587501892
11270a6947368
1211361995458
136610911260
1434691ad420
151bb65ecbb2
hexff8223944

68587501892 has 24 divisors (see below), whose sum is σ = 147726927936. Its totient is φ = 27133517088.

The previous prime is 68587501883. The next prime is 68587501901. The reversal of 68587501892 is 29810578586.

It is an interprime number because it is at equal distance from previous prime (68587501883) and next prime (68587501901).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94213238 + ... + 94213965.

It is an arithmetic number, because the mean of its divisors is an integer number (6155288664).

Almost surely, 268587501892 is an apocalyptic number.

It is an amenable number.

68587501892 is an abundant number, since it is smaller than the sum of its proper divisors (79139426044).

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

68587501892 is a wasteful number, since it uses less digits than its factorization.

68587501892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188427227 (or 188427225 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 59.

The spelling of 68587501892 in words is "sixty-eight billion, five hundred eighty-seven million, five hundred one thousand, eight hundred ninety-two".

Divisors: 1 2 4 7 13 14 26 28 52 91 182 364 188427203 376854406 753708812 1318990421 2449553639 2637980842 4899107278 5275961684 9798214556 17146875473 34293750946 68587501892