15162220720 has 40 divisors (see below), whose sum is σ = 35287920000. Its totient is φ = 6058736640.

The previous prime is 15162220709. The next prime is 15162220769. The reversal of 15162220720 is 2702226151.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16345 + ... + 174904.

It is an arithmetic number, because the mean of its divisors is an integer number (882198000).

Almost surely, 2^15162220720 is an apocalyptic number.

15162220720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15162220720 is an abundant number, since it is smaller than the sum of its proper divisors (20125699280).

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

15162220720 is a wasteful number, since it uses less digits than its factorization.

15162220720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192253 (or 192247 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 15162220720 its reverse (2702226151), we get a palindrome (17864446871).

The spelling of 15162220720 in words is "fifteen billion, one hundred sixty-two million, two hundred twenty thousand, seven hundred twenty".