15328873723 has 4 divisors (see below), whose sum is σ = 15340603320. Its totient is φ = 15317144128.

The previous prime is 15328873709. The next prime is 15328873739. The reversal of 15328873723 is 32737882351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32737882351 = 31 ⋅1056060721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15328873723 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15328873223) 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, 5862838 + ... + 5865451.

It is an arithmetic number, because the mean of its divisors is an integer number (3835150830).

Almost surely, 2^15328873723 is an apocalyptic number.

15328873723 is a deficient number, since it is larger than the sum of its proper divisors (11729597).

15328873723 is a wasteful number, since it uses less digits than its factorization.

15328873723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11729596.

The product of its digits is 1693440, while the sum is 49.

The spelling of 15328873723 in words is "fifteen billion, three hundred twenty-eight million, eight hundred seventy-three thousand, seven hundred twenty-three".