16163872506 has 96 divisors (see below), whose sum is σ = 36638334720. Its totient is φ = 5143824000.

The previous prime is 16163872481. The next prime is 16163872511. The reversal of 16163872506 is 60527836161.

16163872506 is a `hidden beast` number, since 1 + 6 + 1 + 63 + 87 + 2 + 506 = 666.

It is a super-2 number, since 2×16163872506² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23057956 + ... + 23058656.

It is an arithmetic number, because the mean of its divisors is an integer number (381649320).

Almost surely, 2^16163872506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16163872506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18319167360).

16163872506 is an abundant number, since it is smaller than the sum of its proper divisors (20474462214).

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

16163872506 is a wasteful number, since it uses less digits than its factorization.

16163872506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1169 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 16163872506 in words is "sixteen billion, one hundred sixty-three million, eight hundred seventy-two thousand, five hundred six".