256540397300 has 36 divisors (see below), whose sum is σ = 607301088576. Its totient is φ = 93287416800.

The previous prime is 256540397227. The next prime is 256540397327. The reversal of 256540397300 is 3793045652.

256540397300 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116608172 + ... + 116610371.

Almost surely, 2^256540397300 is an apocalyptic number.

256540397300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256540397300 is an abundant number, since it is smaller than the sum of its proper divisors (350760691276).

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

256540397300 is a wasteful number, since it uses less digits than its factorization.

256540397300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233218568 (or 233218561 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 44.

The spelling of 256540397300 in words is "two hundred fifty-six billion, five hundred forty million, three hundred ninety-seven thousand, three hundred".