15315208530 has 32 divisors (see below), whose sum is σ = 37100026944. Its totient is φ = 4045886016.

The previous prime is 15315208501. The next prime is 15315208549. The reversal of 15315208530 is 3580251351.

It is a super-2 number, since 2×15315208530² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15315208491 and 15315208500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2382337 + ... + 2388756.

It is an arithmetic number, because the mean of its divisors is an integer number (1159375842).

Almost surely, 2^15315208530 is an apocalyptic number.

15315208530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15315208530 is an abundant number, since it is smaller than the sum of its proper divisors (21784818414).

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

15315208530 is a wasteful number, since it uses less digits than its factorization.

15315208530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4771210.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 15315208530 its reverse (3580251351), we get a palindrome (18895459881).

The spelling of 15315208530 in words is "fifteen billion, three hundred fifteen million, two hundred eight thousand, five hundred thirty".