16626645432 has 24 divisors (see below), whose sum is σ = 45030498240. Its totient is φ = 5542215120.

The previous prime is 16626645401. The next prime is 16626645523. The reversal of 16626645432 is 23454662661.

It is a happy number.

16626645432 is a `hidden beast` number, since 16 + 626 + 6 + 4 + 5 + 4 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115462744 + ... + 115462887.

It is an arithmetic number, because the mean of its divisors is an integer number (1876270760).

Almost surely, 2^16626645432 is an apocalyptic number.

16626645432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16626645432 is an abundant number, since it is smaller than the sum of its proper divisors (28403852808).

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

16626645432 is a wasteful number, since it uses less digits than its factorization.

16626645432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230925643 (or 230925636 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 45.

The spelling of 16626645432 in words is "sixteen billion, six hundred twenty-six million, six hundred forty-five thousand, four hundred thirty-two".