15215245155 has 24 divisors (see below), whose sum is σ = 28770646320. Its totient is φ = 7377088320.

The previous prime is 15215245151. The next prime is 15215245169. The reversal of 15215245155 is 55154251251.

15215245155 is a `hidden beast` number, since 1 + 5 + 2 + 152 + 451 + 55 = 666.

It is not a de Polignac number, because 15215245155 - 2² = 15215245151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15215245151) 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 23 ways as a sum of consecutive naturals, for example, 15368440 + ... + 15369429.

It is an arithmetic number, because the mean of its divisors is an integer number (1198776930).

Almost surely, 2^15215245155 is an apocalyptic number.

15215245155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15215245155 is a deficient number, since it is larger than the sum of its proper divisors (13555401165).

15215245155 is a wasteful number, since it uses less digits than its factorization.

15215245155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30737891 (or 30737888 counting only the distinct ones).

The product of its digits is 50000, while the sum is 36.

The spelling of 15215245155 in words is "fifteen billion, two hundred fifteen million, two hundred forty-five thousand, one hundred fifty-five".