15120654550 has 24 divisors (see below), whose sum is σ = 29031659712. Its totient is φ = 5853156000.

The previous prime is 15120654487. The next prime is 15120654599. The reversal of 15120654550 is 5545602151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4876081 + ... + 4879180.

It is an arithmetic number, because the mean of its divisors is an integer number (1209652488).

Almost surely, 2^15120654550 is an apocalyptic number.

15120654550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15120654550 is a deficient number, since it is larger than the sum of its proper divisors (13911005162).

15120654550 is a wasteful number, since it uses less digits than its factorization.

15120654550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9755304 (or 9755299 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 15120654550 in words is "fifteen billion, one hundred twenty million, six hundred fifty-four thousand, five hundred fifty".