16117633872 has 30 divisors (see below), whose sum is σ = 45106989642. Its totient is φ = 5372544576.

The previous prime is 16117633849. The next prime is 16117633897. The reversal of 16117633872 is 27833671161.

16117633872 is a `hidden beast` number, since 1 + 6 + 1 + 1 + 7 + 633 + 8 + 7 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9186072336 + 6931561536 = 95844^2 + 83256^2 .

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, 55963863 + ... + 55964150.

Almost surely, 2^16117633872 is an apocalyptic number.

16117633872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16117633872 is an abundant number, since it is smaller than the sum of its proper divisors (28989355770).

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

16117633872 is a wasteful number, since it uses less digits than its factorization.

16117633872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111928027 (or 111928018 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The spelling of 16117633872 in words is "sixteen billion, one hundred seventeen million, six hundred thirty-three thousand, eight hundred seventy-two".