256195496780 has 48 divisors (see below), whose sum is σ = 569798530560. Its totient is φ = 96426313728.

The previous prime is 256195496761. The next prime is 256195496813. The reversal of 256195496780 is 87694591652.

256195496780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×256195496780² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1321301 + ... + 1502739.

It is an arithmetic number, because the mean of its divisors is an integer number (11870802720).

Almost surely, 2^256195496780 is an apocalyptic number.

256195496780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256195496780 is an abundant number, since it is smaller than the sum of its proper divisors (313603033780).

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

256195496780 is a wasteful number, since it uses less digits than its factorization.

256195496780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185618 (or 185616 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 62.

The spelling of 256195496780 in words is "two hundred fifty-six billion, one hundred ninety-five million, four hundred ninety-six thousand, seven hundred eighty".