23645065615 has 4 divisors (see below), whose sum is σ = 28374078744. Its totient is φ = 18916052488.

The previous prime is 23645065583. The next prime is 23645065663. The reversal of 23645065615 is 51656054632.

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 23645065615 - 2⁵ = 23645065583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2364506557 + ... + 2364506566.

It is an arithmetic number, because the mean of its divisors is an integer number (7093519686).

Almost surely, 2^23645065615 is an apocalyptic number.

23645065615 is a deficient number, since it is larger than the sum of its proper divisors (4729013129).

23645065615 is an equidigital number, since it uses as much as digits as its factorization.

23645065615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4729013128.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 23645065615 in words is "twenty-three billion, six hundred forty-five million, sixty-five thousand, six hundred fifteen".