256126878337 has 16 divisors (see below), whose sum is σ = 295901811072. Its totient is φ = 219105457920.

The previous prime is 256126878317. The next prime is 256126878409. The reversal of 256126878337 is 733878621652.

It is a cyclic number.

It is not a de Polignac number, because 256126878337 - 2³¹ = 253979394689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256126878317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 909643 + ... + 1157455.

It is an arithmetic number, because the mean of its divisors is an integer number (18493863192).

Almost surely, 2^256126878337 is an apocalyptic number.

It is an amenable number.

256126878337 is a deficient number, since it is larger than the sum of its proper divisors (39774932735).

256126878337 is a wasteful number, since it uses less digits than its factorization.

256126878337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253368.

The product of its digits is 20321280, while the sum is 58.

The spelling of 256126878337 in words is "two hundred fifty-six billion, one hundred twenty-six million, eight hundred seventy-eight thousand, three hundred thirty-seven".