15145015872 has 56 divisors (see below), whose sum is σ = 45795647296. Its totient is φ = 4327147008.

The previous prime is 15145015829. The next prime is 15145015927. The reversal of 15145015872 is 27851054151.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 15145015872.

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, 5632963 + ... + 5635650.

It is an arithmetic number, because the mean of its divisors is an integer number (817779416).

Almost surely, 2^15145015872 is an apocalyptic number.

15145015872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15145015872 is an abundant number, since it is smaller than the sum of its proper divisors (30650631424).

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

15145015872 is a wasteful number, since it uses less digits than its factorization.

15145015872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11268635 (or 11268625 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 39.

The spelling of 15145015872 in words is "fifteen billion, one hundred forty-five million, fifteen thousand, eight hundred seventy-two".