15530530530 has 16 divisors (see below), whose sum is σ = 37273273344. Its totient is φ = 4141474800.

The previous prime is 15530530471. The next prime is 15530530579. The reversal of 15530530530 is 3503503551.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 517684351 = 15530530530 / (1 + 5 + 5 + 3 + 0 + 5 + 3 + 0 + 5 + 3 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258842146 + ... + 258842205.

It is an arithmetic number, because the mean of its divisors is an integer number (2329579584).

Almost surely, 2^15530530530 is an apocalyptic number.

15530530530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15530530530 is an abundant number, since it is smaller than the sum of its proper divisors (21742742814).

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

15530530530 is a wasteful number, since it uses less digits than its factorization.

15530530530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517684361.

The product of its (nonzero) digits is 16875, while the sum is 30.

The spelling of 15530530530 in words is "fifteen billion, five hundred thirty million, five hundred thirty thousand, five hundred thirty".