653129423567 has 4 divisors (see below), whose sum is σ = 653895109560. Its totient is φ = 652363737576.

The previous prime is 653129423549. The next prime is 653129423633. The reversal of 653129423567 is 765324921356.

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 653129423567 - 2²⁶ = 653062314703 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 (653129423267) 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, 382841717 + ... + 382843422.

It is an arithmetic number, because the mean of its divisors is an integer number (163473777390).

Almost surely, 2^653129423567 is an apocalyptic number.

653129423567 is a deficient number, since it is larger than the sum of its proper divisors (765685993).

653129423567 is an equidigital number, since it uses as much as digits as its factorization.

653129423567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765685992.

The product of its digits is 8164800, while the sum is 53.

The spelling of 653129423567 in words is "six hundred fifty-three billion, one hundred twenty-nine million, four hundred twenty-three thousand, five hundred sixty-seven".