16572681216 has 528 divisors, whose sum is σ = 61550506080. Its totient is φ = 4366172160.

The previous prime is 16572681199. The next prime is 16572681241. The reversal of 16572681216 is 61218627561.

16572681216 is a `hidden beast` number, since 1 + 6 + 572 + 68 + 1 + 2 + 16 = 666.

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, 17611306 + ... + 17612246.

Almost surely, 2^16572681216 is an apocalyptic number.

16572681216 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 16572681216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30775253040).

16572681216 is an abundant number, since it is smaller than the sum of its proper divisors (44977824864).

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

16572681216 is a wasteful number, since it uses less digits than its factorization.

16572681216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 966 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 16572681216 in words is "sixteen billion, five hundred seventy-two million, six hundred eighty-one thousand, two hundred sixteen".