256422103616 has 56 divisors (see below), whose sum is σ = 601581443520. Its totient is φ = 106105692672.

The previous prime is 256422103537. The next prime is 256422103643. The reversal of 256422103616 is 616301224652.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 256422103616.

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, 9855470 + ... + 9881453.

Almost surely, 2^256422103616 is an apocalyptic number.

It is an amenable number.

256422103616 is an abundant number, since it is smaller than the sum of its proper divisors (345159339904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256422103616 is a wasteful number, since it uses less digits than its factorization.

256422103616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19736971 (or 19736961 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 256422103616 in words is "two hundred fifty-six billion, four hundred twenty-two million, one hundred three thousand, six hundred sixteen".