15321133989 has 16 divisors (see below), whose sum is σ = 25940544640. Its totient is φ = 8754933600.

The previous prime is 15321133979. The next prime is 15321134021. The reversal of 15321133989 is 98933112351.

15321133989 is a `hidden beast` number, since 1 + 532 + 1 + 1 + 3 + 39 + 89 = 666.

It is not a de Polignac number, because 15321133989 - 2⁴ = 15321133973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15321133909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40531912 + ... + 40532289.

It is an arithmetic number, because the mean of its divisors is an integer number (1621284040).

Almost surely, 2^15321133989 is an apocalyptic number.

It is an amenable number.

15321133989 is a deficient number, since it is larger than the sum of its proper divisors (10619410651).

15321133989 is an equidigital number, since it uses as much as digits as its factorization.

15321133989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81064217 (or 81064211 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The spelling of 15321133989 in words is "fifteen billion, three hundred twenty-one million, one hundred thirty-three thousand, nine hundred eighty-nine".