256871178652 has 48 divisors (see below), whose sum is σ = 494301354624. Its totient is φ = 115829064000.

The previous prime is 256871178617. The next prime is 256871178701.

256871178652 is nontrivially palindromic in base 10.

It is a congruent number.

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, 23171503 + ... + 23182585.

It is an arithmetic number, because the mean of its divisors is an integer number (10297944888).

Almost surely, 2^256871178652 is an apocalyptic number.

256871178652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256871178652 is a deficient number, since it is larger than the sum of its proper divisors (237430175972).

256871178652 is a wasteful number, since it uses less digits than its factorization.

256871178652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15250 (or 15248 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 58.

The spelling of 256871178652 in words is "two hundred fifty-six billion, eight hundred seventy-one million, one hundred seventy-eight thousand, six hundred fifty-two".