256735861210 has 32 divisors (see below), whose sum is σ = 469784998800. Its totient is φ = 100992629760.

The previous prime is 256735861153. The next prime is 256735861241. The reversal of 256735861210 is 12168537652.

It can be written as a sum of positive squares in 8 ways, for example, as 154983155041 + 101752706169 = 393679^2 + 318987^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3642786 + ... + 3712594.

Almost surely, 2^256735861210 is an apocalyptic number.

256735861210 is a deficient number, since it is larger than the sum of its proper divisors (213049137590).

256735861210 is a wasteful number, since it uses less digits than its factorization.

256735861210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75906.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 256735861210 in words is "two hundred fifty-six billion, seven hundred thirty-five million, eight hundred sixty-one thousand, two hundred ten".