15221552315 has 16 divisors (see below), whose sum is σ = 18352217088. Its totient is φ = 12119804256.

The previous prime is 15221552303. The next prime is 15221552317. The reversal of 15221552315 is 51325512251.

It is a cyclic number.

It is not a de Polignac number, because 15221552315 - 2⁴ = 15221552299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15221552317) 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 15 ways as a sum of consecutive naturals, for example, 969014 + ... + 984596.

It is an arithmetic number, because the mean of its divisors is an integer number (1147013568).

Almost surely, 2^15221552315 is an apocalyptic number.

15221552315 is a deficient number, since it is larger than the sum of its proper divisors (3130664773).

15221552315 is a wasteful number, since it uses less digits than its factorization.

15221552315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16498.

The product of its digits is 15000, while the sum is 32.

The spelling of 15221552315 in words is "fifteen billion, two hundred twenty-one million, five hundred fifty-two thousand, three hundred fifteen".