15216067072 has 80 divisors (see below), whose sum is σ = 32301961560. Its totient is φ = 7146897408.

The previous prime is 15216067057. The next prime is 15216067081. The reversal of 15216067072 is 27076061251.

It can be written as a sum of positive squares in 4 ways, for example, as 11840921856 + 3375145216 = 108816^2 + 58096^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535528 + ... + 563224.

Almost surely, 2^15216067072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15216067072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16150980780).

15216067072 is an abundant number, since it is smaller than the sum of its proper divisors (17085894488).

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

15216067072 is an equidigital number, since it uses as much as digits as its factorization.

15216067072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27781 (or 27765 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 15216067072 in words is "fifteen billion, two hundred sixteen million, sixty-seven thousand, seventy-two".