15015442120 has 64 divisors (see below), whose sum is σ = 39654708480. Its totient is φ = 5009008896.

The previous prime is 15015442093. The next prime is 15015442139. The reversal of 15015442120 is 2124451051.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714324 + ... + 735043.

It is an arithmetic number, because the mean of its divisors is an integer number (619604820).

Almost surely, 2^15015442120 is an apocalyptic number.

15015442120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15015442120 is an abundant number, since it is smaller than the sum of its proper divisors (24639266360).

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

15015442120 is a wasteful number, since it uses less digits than its factorization.

15015442120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449422 (or 1449418 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 15015442120 its reverse (2124451051), we get a palindrome (17139893171).

The spelling of 15015442120 in words is "fifteen billion, fifteen million, four hundred forty-two thousand, one hundred twenty".