256798897652 has 48 divisors (see below), whose sum is σ = 495724915392. Its totient is φ = 115425838080.

The previous prime is 256798897637. The next prime is 256798897661.

256798897652 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×256798897652² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 256798897652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5152283 + ... + 5201885.

It is an arithmetic number, because the mean of its divisors is an integer number (10327602404).

Almost surely, 2^256798897652 is an apocalyptic number.

256798897652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256798897652 is a deficient number, since it is larger than the sum of its proper divisors (238926017740).

256798897652 is a wasteful number, since it uses less digits than its factorization.

256798897652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50928 (or 50926 counting only the distinct ones).

The product of its digits is 914457600, while the sum is 74.

The spelling of 256798897652 in words is "two hundred fifty-six billion, seven hundred ninety-eight million, eight hundred ninety-seven thousand, six hundred fifty-two".