21652432612023 has 4 divisors (see below), whose sum is σ = 28869910149368. Its totient is φ = 14434955074680.

The previous prime is 21652432612003. The next prime is 21652432612033. The reversal of 21652432612023 is 32021623425612.

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

It is not a de Polignac number, because 21652432612023 - 2²⁰ = 21652431563447 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 (21652432612003) 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, 3608738768668 + ... + 3608738768673.

It is an arithmetic number, because the mean of its divisors is an integer number (7217477537342).

Almost surely, 2^{21652432612023} is an apocalyptic number.

21652432612023 is a deficient number, since it is larger than the sum of its proper divisors (7217477537345).

21652432612023 is an equidigital number, since it uses as much as digits as its factorization.

21652432612023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7217477537344.

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 21652432612023 in words is "twenty-one trillion, six hundred fifty-two billion, four hundred thirty-two million, six hundred twelve thousand, twenty-three".