15372005640 has 128 divisors (see below), whose sum is σ = 48418992000. Its totient is φ = 3898718208.

The previous prime is 15372005639. The next prime is 15372005653. The reversal of 15372005640 is 4650027351.

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, 200196 + ... + 266124.

It is an arithmetic number, because the mean of its divisors is an integer number (378273375).

Almost surely, 2^15372005640 is an apocalyptic number.

15372005640 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 15372005640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24209496000).

15372005640 is an abundant number, since it is smaller than the sum of its proper divisors (33046986360).

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

15372005640 is a wasteful number, since it uses less digits than its factorization.

15372005640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66039 (or 66035 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 15372005640 in words is "fifteen billion, three hundred seventy-two million, five thousand, six hundred forty".