256279304907 has 6 divisors (see below), whose sum is σ = 370181218212. Its totient is φ = 170852869932.

The previous prime is 256279304891. The next prime is 256279304917. The reversal of 256279304907 is 709403972652.

256279304907 is a `hidden beast` number, since 2 + 5 + 62 + 7 + 93 + 0 + 490 + 7 = 666.

It is not a de Polignac number, because 256279304907 - 2⁴ = 256279304891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256279304917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14237739153 + ... + 14237739170.

It is an arithmetic number, because the mean of its divisors is an integer number (61696869702).

Almost surely, 2^256279304907 is an apocalyptic number.

256279304907 is a deficient number, since it is larger than the sum of its proper divisors (113901913305).

256279304907 is a wasteful number, since it uses less digits than its factorization.

256279304907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28475478329 (or 28475478326 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 256279304907 in words is "two hundred fifty-six billion, two hundred seventy-nine million, three hundred four thousand, nine hundred seven".