256371969212 has 6 divisors (see below), whose sum is σ = 448650946128. Its totient is φ = 128185984604.

The previous prime is 256371969193. The next prime is 256371969253. The reversal of 256371969212 is 212969173652.

It is a happy number.

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 as a sum of consecutive naturals, namely, 32046496148 + ... + 32046496155.

It is an arithmetic number, because the mean of its divisors is an integer number (74775157688).

Almost surely, 2^256371969212 is an apocalyptic number.

It is an amenable number.

256371969212 is a deficient number, since it is larger than the sum of its proper divisors (192278976916).

256371969212 is a wasteful number, since it uses less digits than its factorization.

256371969212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64092992307 (or 64092992305 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 53.

The spelling of 256371969212 in words is "two hundred fifty-six billion, three hundred seventy-one million, nine hundred sixty-nine thousand, two hundred twelve".