256374551534 has 16 divisors (see below), whose sum is σ = 389931985248. Its totient is φ = 126398143872.

The previous prime is 256374551527. The next prime is 256374551551. The reversal of 256374551534 is 435155473652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333434 + ... + 789890.

It is an arithmetic number, because the mean of its divisors is an integer number (24370749078).

Almost surely, 2^256374551534 is an apocalyptic number.

256374551534 is a deficient number, since it is larger than the sum of its proper divisors (133557433714).

256374551534 is a wasteful number, since it uses less digits than its factorization.

256374551534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460379.

The product of its digits is 7560000, while the sum is 50.

The spelling of 256374551534 in words is "two hundred fifty-six billion, three hundred seventy-four million, five hundred fifty-one thousand, five hundred thirty-four".