15214985538 has 16 divisors (see below), whose sum is σ = 30486225216. Its totient is φ = 5062286160.

The previous prime is 15214985491. The next prime is 15214985561. The reversal of 15214985538 is 83558941251.

It is an unprimeable number.

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, 2340406 + ... + 2346897.

It is an arithmetic number, because the mean of its divisors is an integer number (1905389076).

Almost surely, 2^15214985538 is an apocalyptic number.

15214985538 is an abundant number, since it is smaller than the sum of its proper divisors (15271239678).

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

15214985538 is a wasteful number, since it uses less digits than its factorization.

15214985538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687849.

The product of its digits is 1728000, while the sum is 51.

The spelling of 15214985538 in words is "fifteen billion, two hundred fourteen million, nine hundred eighty-five thousand, five hundred thirty-eight".