15216163312472 has 8 divisors (see below), whose sum is σ = 28530306210900. Its totient is φ = 7608081656232.

The previous prime is 15216163312447. The next prime is 15216163312477. The reversal of 15216163312472 is 27421336161251.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×15216163312472³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15216163312477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 951010207022 + ... + 951010207037.

Almost surely, 2^{15216163312472} is an apocalyptic number.

It is an amenable number.

15216163312472 is a deficient number, since it is larger than the sum of its proper divisors (13314142898428).

15216163312472 is a wasteful number, since it uses less digits than its factorization.

15216163312472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902020414065 (or 1902020414061 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The spelling of 15216163312472 in words is "fifteen trillion, two hundred sixteen billion, one hundred sixty-three million, three hundred twelve thousand, four hundred seventy-two".