15115605161 has 4 divisors (see below), whose sum is σ = 15117216000. Its totient is φ = 15113994324.

The previous prime is 15115605133. The next prime is 15115605223. The reversal of 15115605161 is 16150651151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15115605161 - 2¹⁰ = 15115604137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15115605361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791261 + ... + 810138.

It is an arithmetic number, because the mean of its divisors is an integer number (3779304000).

Almost surely, 2^15115605161 is an apocalyptic number.

It is an amenable number.

15115605161 is a deficient number, since it is larger than the sum of its proper divisors (1610839).

15115605161 is an equidigital number, since it uses as much as digits as its factorization.

15115605161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610838.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 15115605161 in words is "fifteen billion, one hundred fifteen million, six hundred five thousand, one hundred sixty-one".