256797797652 has 72 divisors (see below), whose sum is σ = 715150773792. Its totient is φ = 77047032000.

The previous prime is 256797797591. The next prime is 256797797731.

256797797652 is a `hidden beast` number, since 2 + 567 + 9 + 7 + 7 + 9 + 7 + 6 + 52 = 666.

256797797652 is nontrivially palindromic in base 10.

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, 3170298 + ... + 3250289.

It is an arithmetic number, because the mean of its divisors is an integer number (9932649636).

Almost surely, 2^256797797652 is an apocalyptic number.

256797797652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256797797652 is an abundant number, since it is smaller than the sum of its proper divisors (458352976140).

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

256797797652 is a wasteful number, since it uses less digits than its factorization.

256797797652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6420709 (or 6420704 counting only the distinct ones).

The product of its digits is 700131600, while the sum is 72.

The spelling of 256797797652 in words is "two hundred fifty-six billion, seven hundred ninety-seven million, seven hundred ninety-seven thousand, six hundred fifty-two".