16572116736 has 324 divisors, whose sum is σ = 55958559384. Its totient is φ = 4702924800.

The previous prime is 16572116723. The next prime is 16572116753. The reversal of 16572116736 is 63761127561.

16572116736 is a `hidden beast` number, since 1 + 6 + 572 + 1 + 1 + 6 + 73 + 6 = 666.

It is a super-2 number, since 2×16572116736² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16572116691 and 16572116700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20433771 + ... + 20434581.

Almost surely, 2^16572116736 is an apocalyptic number.

16572116736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16572116736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27979279692).

16572116736 is an abundant number, since it is smaller than the sum of its proper divisors (39386442648).

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

16572116736 is a wasteful number, since it uses less digits than its factorization.

16572116736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028 (or 1004 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The spelling of 16572116736 in words is "sixteen billion, five hundred seventy-two million, one hundred sixteen thousand, seven hundred thirty-six".