256273416416 has 24 divisors (see below), whose sum is σ = 534217012560. Its totient is φ = 120599254528.

The previous prime is 256273416397. The next prime is 256273416439. The reversal of 256273416416 is 614614372652.

It is a congruent number.

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, 235544876 + ... + 235545963.

It is an arithmetic number, because the mean of its divisors is an integer number (22259042190).

Almost surely, 2^256273416416 is an apocalyptic number.

It is an amenable number.

256273416416 is an abundant number, since it is smaller than the sum of its proper divisors (277943596144).

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

256273416416 is a wasteful number, since it uses less digits than its factorization.

256273416416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471090866 (or 471090858 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 47.

The spelling of 256273416416 in words is "two hundred fifty-six billion, two hundred seventy-three million, four hundred sixteen thousand, four hundred sixteen".