15116774909 has 4 divisors (see below), whose sum is σ = 15774026016. Its totient is φ = 14459523804.

The previous prime is 15116774903. The next prime is 15116775049. The reversal of 15116774909 is 90947761151.

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 not a de Polignac number, because 15116774909 - 2¹² = 15116770813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15116774903) 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, 328625519 + ... + 328625564.

It is an arithmetic number, because the mean of its divisors is an integer number (3943506504).

Almost surely, 2^15116774909 is an apocalyptic number.

It is an amenable number.

15116774909 is a deficient number, since it is larger than the sum of its proper divisors (657251107).

15116774909 is an equidigital number, since it uses as much as digits as its factorization.

15116774909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657251106.

The product of its (nonzero) digits is 476280, while the sum is 50.

The spelling of 15116774909 in words is "fifteen billion, one hundred sixteen million, seven hundred seventy-four thousand, nine hundred nine".