23647467997 has 4 divisors (see below), whose sum is σ = 23648042560. Its totient is φ = 23646893436.

The previous prime is 23647467889. The next prime is 23647468021. The reversal of 23647467997 is 79976474632.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23647467997 - 2²³ = 23639079389 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 (23647467097) 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, 220347 + ... + 309592.

It is an arithmetic number, because the mean of its divisors is an integer number (5912010640).

Almost surely, 2^23647467997 is an apocalyptic number.

It is an amenable number.

23647467997 is a deficient number, since it is larger than the sum of its proper divisors (574563).

23647467997 is an equidigital number, since it uses as much as digits as its factorization.

23647467997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574562.

The product of its digits is 96018048, while the sum is 64.

The spelling of 23647467997 in words is "twenty-three billion, six hundred forty-seven million, four hundred sixty-seven thousand, nine hundred ninety-seven".