2517572438723 has 4 divisors (see below), whose sum is σ = 2517730902120. Its totient is φ = 2517413975328.

The previous prime is 2517572438701. The next prime is 2517572438813. The reversal of 2517572438723 is 3278342757152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2517572438723 - 2²⁸ = 2517304003267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2517572431723) 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, 79207865 + ... + 79239642.

It is an arithmetic number, because the mean of its divisors is an integer number (629432725530).

Almost surely, 2^{2517572438723} is an apocalyptic number.

2517572438723 is a deficient number, since it is larger than the sum of its proper divisors (158463397).

2517572438723 is a wasteful number, since it uses less digits than its factorization.

2517572438723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158463396.

The product of its digits is 19756800, while the sum is 56.

The spelling of 2517572438723 in words is "two trillion, five hundred seventeen billion, five hundred seventy-two million, four hundred thirty-eight thousand, seven hundred twenty-three".