256614664210 has 16 divisors (see below), whose sum is σ = 463573932696. Its totient is φ = 102275301888.

The previous prime is 256614664169. The next prime is 256614664213. The reversal of 256614664210 is 12466416652.

It can be written as a sum of positive squares in 4 ways, for example, as 87177877081 + 169436787129 = 295259^2 + 411627^2 .

It is a super-2 number, since 2×256614664210² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256614664213) 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, 46317567 + ... + 46323106.

Almost surely, 2^256614664210 is an apocalyptic number.

256614664210 is a deficient number, since it is larger than the sum of its proper divisors (206959268486).

256614664210 is a wasteful number, since it uses less digits than its factorization.

256614664210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92640957.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 256614664210 in words is "two hundred fifty-six billion, six hundred fourteen million, six hundred sixty-four thousand, two hundred ten".