256287888892036 has 27 divisors (see below), whose sum is σ = 448825713116151. Its totient is φ = 128052036811464.

The previous prime is 256287888892019. The next prime is 256287888892093. The reversal of 256287888892036 is 630298888782652.

The square root of 256287888892036 is 16008994.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 76298863725 + ... + 76298867083.

Almost surely, 2^{256287888892036} is an apocalyptic number.

256287888892036 is the 16008994-th square number.

It is an amenable number.

256287888892036 is a deficient number, since it is larger than the sum of its proper divisors (192537824224115).

256287888892036 is an frugal number, since it uses more digits than its factorization.

256287888892036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11488 (or 5744 counting only the distinct ones).

The product of its (nonzero) digits is 8918138880, while the sum is 82.

The spelling of 256287888892036 in words is "two hundred fifty-six trillion, two hundred eighty-seven billion, eight hundred eighty-eight million, eight hundred ninety-two thousand, thirty-six".