23772135899 has 4 divisors (see below), whose sum is σ = 23772444336. Its totient is φ = 23771827464.

The previous prime is 23772135857. The next prime is 23772135943. The reversal of 23772135899 is 99853127732.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23772135899 - 2²⁰ = 23771087323 is a prime.

It is a super-2 number, since 2×23772135899² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23772135839) 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, 72122 + ... + 229664.

It is an arithmetic number, because the mean of its divisors is an integer number (5943111084).

Almost surely, 2^23772135899 is an apocalyptic number.

23772135899 is a deficient number, since it is larger than the sum of its proper divisors (308437).

23772135899 is a wasteful number, since it uses less digits than its factorization.

23772135899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308436.

The product of its digits is 5715360, while the sum is 56.

The spelling of 23772135899 in words is "twenty-three billion, seven hundred seventy-two million, one hundred thirty-five thousand, eight hundred ninety-nine".