23237779647 has 4 divisors (see below), whose sum is σ = 30983706200. Its totient is φ = 15491853096.

The previous prime is 23237779639. The next prime is 23237779679. The reversal of 23237779647 is 74697773232.

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

It is not a de Polignac number, because 23237779647 - 2³ = 23237779639 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 (23237779687) 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, 3872963272 + ... + 3872963277.

It is an arithmetic number, because the mean of its divisors is an integer number (7745926550).

Almost surely, 2^23237779647 is an apocalyptic number.

23237779647 is a deficient number, since it is larger than the sum of its proper divisors (7745926553).

23237779647 is an equidigital number, since it uses as much as digits as its factorization.

23237779647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7745926552.

The product of its digits is 18670176, while the sum is 57.

The spelling of 23237779647 in words is "twenty-three billion, two hundred thirty-seven million, seven hundred seventy-nine thousand, six hundred forty-seven".