256462064562 has 128 divisors (see below), whose sum is σ = 597225830400. Its totient is φ = 72603648000.

The previous prime is 256462064561. The next prime is 256462064567. The reversal of 256462064562 is 265460264652.

It is not an unprimeable number, because it can be changed into a prime (256462064561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32546139 + ... + 32554017.

It is an arithmetic number, because the mean of its divisors is an integer number (4665826800).

Almost surely, 2^256462064562 is an apocalyptic number.

256462064562 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 256462064562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298612915200).

256462064562 is an abundant number, since it is smaller than the sum of its proper divisors (340763765838).

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

256462064562 is a wasteful number, since it uses less digits than its factorization.

256462064562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8272.

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 256462064562 in words is "two hundred fifty-six billion, four hundred sixty-two million, sixty-four thousand, five hundred sixty-two".