256507767613322 has 8 divisors (see below), whose sum is σ = 384761719586496. Its totient is φ = 128253861084492.

The previous prime is 256507767613247. The next prime is 256507767613423. The reversal of 256507767613322 is 223316767705652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×256507767613322² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14777273 + ... + 27044099.

It is an arithmetic number, because the mean of its divisors is an integer number (48095214948312).

Almost surely, 2^{256507767613322} is an apocalyptic number.

256507767613322 is a deficient number, since it is larger than the sum of its proper divisors (128253951973174).

256507767613322 is a wasteful number, since it uses less digits than its factorization.

256507767613322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22722172.

The product of its (nonzero) digits is 133358400, while the sum is 62.

The spelling of 256507767613322 in words is "two hundred fifty-six trillion, five hundred seven billion, seven hundred sixty-seven million, six hundred thirteen thousand, three hundred twenty-two".