15012531989 has 32 divisors (see below), whose sum is σ = 19580795136. Its totient is φ = 11169653760.

The previous prime is 15012531983. The next prime is 15012531991. The reversal of 15012531989 is 98913521051.

It is a cyclic number.

It is not a de Polignac number, because 15012531989 - 2²⁴ = 14995754773 is a prime.

It is a super-2 number, since 2×15012531989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15012531983) 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 31 ways as a sum of consecutive naturals, for example, 2132894 + ... + 2139920.

It is an arithmetic number, because the mean of its divisors is an integer number (611899848).

Almost surely, 2^15012531989 is an apocalyptic number.

It is an amenable number.

15012531989 is a deficient number, since it is larger than the sum of its proper divisors (4568263147).

15012531989 is a wasteful number, since it uses less digits than its factorization.

15012531989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8445.

The product of its (nonzero) digits is 97200, while the sum is 44.

The spelling of 15012531989 in words is "fifteen billion, twelve million, five hundred thirty-one thousand, nine hundred eighty-nine".