15120255155 has 4 divisors (see below), whose sum is σ = 18144306192. Its totient is φ = 12096204120.

The previous prime is 15120255127. The next prime is 15120255173. The reversal of 15120255155 is 55155202151.

15120255155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 15120255155 - 2⁸ = 15120254899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512025511 + ... + 1512025520.

It is an arithmetic number, because the mean of its divisors is an integer number (4536076548).

Almost surely, 2^15120255155 is an apocalyptic number.

15120255155 is a deficient number, since it is larger than the sum of its proper divisors (3024051037).

15120255155 is an equidigital number, since it uses as much as digits as its factorization.

15120255155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024051036.

The product of its (nonzero) digits is 12500, while the sum is 32.

The spelling of 15120255155 in words is "fifteen billion, one hundred twenty million, two hundred fifty-five thousand, one hundred fifty-five".