15161624640 has 168 divisors, whose sum is σ = 52370248320. Its totient is φ = 4026000384.

The previous prime is 15161624627. The next prime is 15161624701. The reversal of 15161624640 is 4642616151.

15161624640 is a `hidden beast` number, since 1 + 5 + 1 + 6 + 1 + 6 + 2 + 4 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 15161624595 and 15161624604.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 677307 + ... + 699333.

Almost surely, 2^15161624640 is an apocalyptic number.

15161624640 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 15161624640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26185124160).

15161624640 is an abundant number, since it is smaller than the sum of its proper divisors (37208623680).

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

15161624640 is a wasteful number, since it uses less digits than its factorization.

15161624640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22289 (or 22276 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 15161624640 in words is "fifteen billion, one hundred sixty-one million, six hundred twenty-four thousand, six hundred forty".