16671712572 has 30 divisors (see below), whose sum is σ = 43583150688. Its totient is φ = 5557237416.

The previous prime is 16671712571. The next prime is 16671712579. The reversal of 16671712572 is 27521717661.

16671712572 is a `hidden beast` number, since 1 + 6 + 6 + 7 + 1 + 71 + 2 + 572 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16671712571) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 25727628 + ... + 25728275.

Almost surely, 2^16671712572 is an apocalyptic number.

16671712572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16671712572 is an abundant number, since it is smaller than the sum of its proper divisors (26911438116).

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

16671712572 is a wasteful number, since it uses less digits than its factorization.

16671712572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51455919 (or 51455908 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The spelling of 16671712572 in words is "sixteen billion, six hundred seventy-one million, seven hundred twelve thousand, five hundred seventy-two".