16601256630 has 48 divisors (see below), whose sum is σ = 49329450144. Its totient is φ = 3794572800.

The previous prime is 16601256589. The next prime is 16601256643. The reversal of 16601256630 is 3665210661.

16601256630 is a `hidden beast` number, since 1 + 6 + 6 + 0 + 12 + 5 + 6 + 630 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13174971 + ... + 13176230.

It is an arithmetic number, because the mean of its divisors is an integer number (1027696878).

Almost surely, 2^16601256630 is an apocalyptic number.

16601256630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16601256630 is an abundant number, since it is smaller than the sum of its proper divisors (32728193514).

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

16601256630 is a wasteful number, since it uses less digits than its factorization.

16601256630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26351221 (or 26351218 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 16601256630 in words is "sixteen billion, six hundred one million, two hundred fifty-six thousand, six hundred thirty".