15774972113 has 4 divisors (see below), whose sum is σ = 15825695808. Its totient is φ = 15724248420.

The previous prime is 15774972071. The next prime is 15774972127. The reversal of 15774972113 is 31127947751.

15774972113 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31127947751 = 14437 ⋅2156123.

It is a cyclic number.

It is not a de Polignac number, because 15774972113 - 2¹² = 15774968017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15774972173) by changing a digit.

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, 25361381 + ... + 25362002.

It is an arithmetic number, because the mean of its divisors is an integer number (3956423952).

Almost surely, 2^15774972113 is an apocalyptic number.

It is an amenable number.

15774972113 is a deficient number, since it is larger than the sum of its proper divisors (50723695).

15774972113 is an equidigital number, since it uses as much as digits as its factorization.

15774972113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50723694.

The product of its digits is 370440, while the sum is 47.

The spelling of 15774972113 in words is "fifteen billion, seven hundred seventy-four million, nine hundred seventy-two thousand, one hundred thirteen".