256467717055244 has 24 divisors (see below), whose sum is σ = 460983222346080. Its totient is φ = 124758743567616.

The previous prime is 256467717055237. The next prime is 256467717055261. The reversal of 256467717055244 is 442550717764652.

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, 62841389 + ... + 66798020.

It is an arithmetic number, because the mean of its divisors is an integer number (19207634264420).

Almost surely, 2^{256467717055244} is an apocalyptic number.

It is an amenable number.

256467717055244 is a deficient number, since it is larger than the sum of its proper divisors (204515505290836).

256467717055244 is a wasteful number, since it uses less digits than its factorization.

256467717055244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129652817 (or 129652815 counting only the distinct ones).

The product of its (nonzero) digits is 395136000, while the sum is 65.

The spelling of 256467717055244 in words is "two hundred fifty-six trillion, four hundred sixty-seven billion, seven hundred seventeen million, fifty-five thousand, two hundred forty-four".