256516612500464 has 80 divisors (see below), whose sum is σ = 498058900904448. Its totient is φ = 127985703611136.

The previous prime is 256516612500443. The next prime is 256516612500481. The reversal of 256516612500464 is 464005216615652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70802264957 + ... + 70802268579.

Almost surely, 2^{256516612500464} is an apocalyptic number.

It is an amenable number.

256516612500464 is a deficient number, since it is larger than the sum of its proper divisors (241542288403984).

256516612500464 is a wasteful number, since it uses less digits than its factorization.

256516612500464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8622 (or 8616 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 53.

The spelling of 256516612500464 in words is "two hundred fifty-six trillion, five hundred sixteen billion, six hundred twelve million, five hundred thousand, four hundred sixty-four".