15240808139955 has 96 divisors (see below), whose sum is σ = 24966268830720. Its totient is φ = 7939163781120.

The previous prime is 15240808139939. The next prime is 15240808139959. The reversal of 15240808139955 is 55993180804251.

It is not a de Polignac number, because 15240808139955 - 2⁴ = 15240808139939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15240808139959) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15599598427 + ... + 15599599403.

It is an arithmetic number, because the mean of its divisors is an integer number (260065300320).

Almost surely, 2^{15240808139955} is an apocalyptic number.

15240808139955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15240808139955 is a deficient number, since it is larger than the sum of its proper divisors (9725460690765).

15240808139955 is an equidigital number, since it uses as much as digits as its factorization.

15240808139955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381 (or 2328 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 60.

The spelling of 15240808139955 in words is "fifteen trillion, two hundred forty billion, eight hundred eight million, one hundred thirty-nine thousand, nine hundred fifty-five".