256366674202540 has 24 divisors (see below), whose sum is σ = 587312744537232. Its totient is φ = 93224245164480.

The previous prime is 256366674202531. The next prime is 256366674202553. The reversal of 256366674202540 is 45202476663652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582651532059 + ... + 582651532498.

It is an arithmetic number, because the mean of its divisors is an integer number (24471364355718).

Almost surely, 2^{256366674202540} is an apocalyptic number.

256366674202540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256366674202540 is an abundant number, since it is smaller than the sum of its proper divisors (330946070334692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256366674202540 is a wasteful number, since it uses less digits than its factorization.

256366674202540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165303064577 (or 1165303064575 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 58.

The spelling of 256366674202540 in words is "two hundred fifty-six trillion, three hundred sixty-six billion, six hundred seventy-four million, two hundred two thousand, five hundred forty".