15134799923 has 4 divisors (see below), whose sum is σ = 15931368360. Its totient is φ = 14338231488.

The previous prime is 15134799877. The next prime is 15134799941. The reversal of 15134799923 is 32999743151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32999743151 = 178873 ⋅184487.

It is a cyclic number.

It is not a de Polignac number, because 15134799923 - 2¹⁴ = 15134783539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15134799023) 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, 398284190 + ... + 398284227.

It is an arithmetic number, because the mean of its divisors is an integer number (3982842090).

Almost surely, 2^15134799923 is an apocalyptic number.

15134799923 is a deficient number, since it is larger than the sum of its proper divisors (796568437).

15134799923 is an equidigital number, since it uses as much as digits as its factorization.

15134799923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796568436.

The product of its digits is 1837080, while the sum is 53.

The spelling of 15134799923 in words is "fifteen billion, one hundred thirty-four million, seven hundred ninety-nine thousand, nine hundred twenty-three".