256465513006 has 16 divisors (see below), whose sum is σ = 388644066720. Its totient is φ = 126923623200.

The previous prime is 256465513001. The next prime is 256465513009. The reversal of 256465513006 is 600315564652.

It is a super-2 number, since 2×256465513006² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256465513001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1449241 + ... + 1616548.

It is an arithmetic number, because the mean of its divisors is an integer number (24290254170).

Almost surely, 2^256465513006 is an apocalyptic number.

256465513006 is a deficient number, since it is larger than the sum of its proper divisors (132178553714).

256465513006 is a wasteful number, since it uses less digits than its factorization.

256465513006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066219.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 256465513006 in words is "two hundred fifty-six billion, four hundred sixty-five million, five hundred thirteen thousand, six".