256883543400 has 96 divisors (see below), whose sum is σ = 868733460000. Its totient is φ = 62274796800.

The previous prime is 256883543387. The next prime is 256883543419. The reversal of 256883543400 is 4345388652.

It is a self number, because there is not a number n which added to its sum of digits gives 256883543400.

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, 19454275 + ... + 19467474.

It is an arithmetic number, because the mean of its divisors is an integer number (9049306875).

Almost surely, 2^256883543400 is an apocalyptic number.

256883543400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256883543400 is an abundant number, since it is smaller than the sum of its proper divisors (611849916600).

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

256883543400 is a wasteful number, since it uses less digits than its factorization.

256883543400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38921779 (or 38921770 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 48.

The spelling of 256883543400 in words is "two hundred fifty-six billion, eight hundred eighty-three million, five hundred forty-three thousand, four hundred".