16255216016400 has 60 divisors (see below), whose sum is σ = 52070875309712. Its totient is φ = 4334724270720.

The previous prime is 16255216016371. The next prime is 16255216016441. The reversal of 16255216016400 is 461061255261.

It is a tau number, because it is divible by the number of its divisors (60).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6773005474 + ... + 6773007873.

Almost surely, 2^{16255216016400} is an apocalyptic number.

16255216016400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16255216016400 is an abundant number, since it is smaller than the sum of its proper divisors (35815659293312).

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

16255216016400 is a wasteful number, since it uses less digits than its factorization.

16255216016400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13546013368 (or 13546013357 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 16255216016400 in words is "sixteen trillion, two hundred fifty-five billion, two hundred sixteen million, sixteen thousand, four hundred".