256632013321102 has 16 divisors (see below), whose sum is σ = 385223711525280. Its totient is φ = 128224141828992.

The previous prime is 256632013321031. The next prime is 256632013321121. The reversal of 256632013321102 is 201123310236652.

It is a super-2 number, since 2×256632013321102² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7787143 + ... + 23956285.

It is an arithmetic number, because the mean of its divisors is an integer number (24076481970330).

Almost surely, 2^{256632013321102} is an apocalyptic number.

256632013321102 is a deficient number, since it is larger than the sum of its proper divisors (128591698204178).

256632013321102 is a wasteful number, since it uses less digits than its factorization.

256632013321102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16174827.

The product of its (nonzero) digits is 77760, while the sum is 37.

Adding to 256632013321102 its reverse (201123310236652), we get a palindrome (457755323557754).

It can be divided in two parts, 256632013 and 321102, that added together give a triangular number (256953115 = T₂₂₆₆₉).

The spelling of 256632013321102 in words is "two hundred fifty-six trillion, six hundred thirty-two billion, thirteen million, three hundred twenty-one thousand, one hundred two".