255658939992 has 96 divisors (see below), whose sum is σ = 750189520080. Its totient is φ = 78341437440.

The previous prime is 255658939969. The next prime is 255658940029. The reversal of 255658939992 is 299939856552.

255658939992 is a `hidden beast` number, since 2 + 5 + 5 + 6 + 589 + 39 + 9 + 9 + 2 = 666.

It is a super-2 number, since 2×255658939992² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 255658939992.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2376109 + ... + 2481372.

Almost surely, 2^255658939992 is an apocalyptic number.

It is an amenable number.

255658939992 is an abundant number, since it is smaller than the sum of its proper divisors (494530580088).

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

255658939992 is a wasteful number, since it uses less digits than its factorization.

255658939992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4857553 (or 4857546 counting only the distinct ones).

The product of its digits is 472392000, while the sum is 72.

The spelling of 255658939992 in words is "two hundred fifty-five billion, six hundred fifty-eight million, nine hundred thirty-nine thousand, nine hundred ninety-two".