16560156672 has 208 divisors, whose sum is σ = 49464466080. Its totient is φ = 5474746368.

The previous prime is 16560156593. The next prime is 16560156709. The reversal of 16560156672 is 27665106561.

16560156672 is a `hidden beast` number, since 1 + 6 + 560 + 15 + 6 + 6 + 72 = 666.

It is a super-2 number, since 2×16560156672² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15150558 + ... + 15151650.

Almost surely, 2^16560156672 is an apocalyptic number.

16560156672 is a gapful number since it is divisible by the number (12) 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 16560156672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24732233040).

16560156672 is an abundant number, since it is smaller than the sum of its proper divisors (32904309408).

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

16560156672 is a wasteful number, since it uses less digits than its factorization.

16560156672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 16560156672 in words is "sixteen billion, five hundred sixty million, one hundred fifty-six thousand, six hundred seventy-two".