23015515465 has 4 divisors (see below), whose sum is σ = 27618618564. Its totient is φ = 18412412368.

The previous prime is 23015515459. The next prime is 23015515487. The reversal of 23015515465 is 56451551032.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3542987529 + 19472527936 = 59523^2 + 139544^2 .

It is a cyclic number.

It is not a de Polignac number, because 23015515465 - 2⁷ = 23015515337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2301551542 + ... + 2301551551.

It is an arithmetic number, because the mean of its divisors is an integer number (6904654641).

Almost surely, 2^23015515465 is an apocalyptic number.

It is an amenable number.

23015515465 is a deficient number, since it is larger than the sum of its proper divisors (4603103099).

23015515465 is an equidigital number, since it uses as much as digits as its factorization.

23015515465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4603103098.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 23015515465 in words is "twenty-three billion, fifteen million, five hundred fifteen thousand, four hundred sixty-five".