256507133344372 has 12 divisors (see below), whose sum is σ = 452422030466560. Its totient is φ = 127243696068216.

The previous prime is 256507133344361. The next prime is 256507133344411. The reversal of 256507133344372 is 273443331705652.

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 3 ways as a sum of consecutive naturals, for example, 252467650422 + ... + 252467651437.

Almost surely, 2^{256507133344372} is an apocalyptic number.

It is an amenable number.

256507133344372 is a deficient number, since it is larger than the sum of its proper divisors (195914897122188).

256507133344372 is a wasteful number, since it uses less digits than its factorization.

256507133344372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504935301990 (or 504935301988 counting only the distinct ones).

The product of its (nonzero) digits is 38102400, while the sum is 55.

The spelling of 256507133344372 in words is "two hundred fifty-six trillion, five hundred seven billion, one hundred thirty-three million, three hundred forty-four thousand, three hundred seventy-two".