13991232530 has 16 divisors (see below), whose sum is σ = 27473693184. Its totient is φ = 5087720880.

The previous prime is 13991232491. The next prime is 13991232539. The reversal of 13991232530 is 3523219931.

It is not an unprimeable number, because it can be changed into a prime (13991232539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63596402 + ... + 63596621.

It is an arithmetic number, because the mean of its divisors is an integer number (1717105824).

Almost surely, 2^13991232530 is an apocalyptic number.

13991232530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13991232530 is a deficient number, since it is larger than the sum of its proper divisors (13482460654).

13991232530 is a wasteful number, since it uses less digits than its factorization.

13991232530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127193041.

The product of its (nonzero) digits is 43740, while the sum is 38.

The spelling of 13991232530 in words is "thirteen billion, nine hundred ninety-one million, two hundred thirty-two thousand, five hundred thirty".