16622772516 has 432 divisors, whose sum is σ = 55194572160. Its totient is φ = 4117340160.

The previous prime is 16622772503. The next prime is 16622772521. The reversal of 16622772516 is 61527722661.

16622772516 is a `hidden beast` number, since 1 + 6 + 62 + 2 + 7 + 72 + 516 = 666.

It is a super-2 number, since 2×16622772516² (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 143 ways as a sum of consecutive naturals, for example, 56732866 + ... + 56733158.

Almost surely, 2^16622772516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16622772516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27597286080).

16622772516 is an abundant number, since it is smaller than the sum of its proper divisors (38571799644).

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

16622772516 is a wasteful number, since it uses less digits than its factorization.

16622772516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 382 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The spelling of 16622772516 in words is "sixteen billion, six hundred twenty-two million, seven hundred seventy-two thousand, five hundred sixteen".