15365666472 has 128 divisors (see below), whose sum is σ = 45048528000. Its totient is φ = 4324561920.

The previous prime is 15365666441. The next prime is 15365666489. The reversal of 15365666472 is 27466656351.

It is a super-2 number, since 2×15365666472² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127222 + ... + 216602.

It is an arithmetic number, because the mean of its divisors is an integer number (351941625).

Almost surely, 2^15365666472 is an apocalyptic number.

15365666472 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 15365666472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22524264000).

15365666472 is an abundant number, since it is smaller than the sum of its proper divisors (29682861528).

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

15365666472 is a wasteful number, since it uses less digits than its factorization.

15365666472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89451 (or 89447 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 51.

The spelling of 15365666472 in words is "fifteen billion, three hundred sixty-five million, six hundred sixty-six thousand, four hundred seventy-two".