15189420560 has 80 divisors (see below), whose sum is σ = 36375122736. Its totient is φ = 5894406144.

The previous prime is 15189420557. The next prime is 15189420601. The reversal of 15189420560 is 6502498151.

It can be written as a sum of positive squares in 8 ways, for example, as 12166144 + 15177254416 = 3488^2 + 123196^2 .

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 1037612 + ... + 1052148.

Almost surely, 2^15189420560 is an apocalyptic number.

15189420560 is a gapful number since it is divisible by the number (10) 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 15189420560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18187561368).

15189420560 is an abundant number, since it is smaller than the sum of its proper divisors (21185702176).

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

15189420560 is a wasteful number, since it uses less digits than its factorization.

15189420560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14940 (or 14934 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The spelling of 15189420560 in words is "fifteen billion, one hundred eighty-nine million, four hundred twenty thousand, five hundred sixty".