23286563021 has 4 divisors (see below), whose sum is σ = 23287465344. Its totient is φ = 23285660700.

The previous prime is 23286563017. The next prime is 23286563029. The reversal of 23286563021 is 12036568232.

It is a happy number.

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 23286563021 - 2² = 23286563017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23286563029) 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, 411275 + ... + 464456.

It is an arithmetic number, because the mean of its divisors is an integer number (5821866336).

Almost surely, 2^23286563021 is an apocalyptic number.

It is an amenable number.

23286563021 is a deficient number, since it is larger than the sum of its proper divisors (902323).

23286563021 is an equidigital number, since it uses as much as digits as its factorization.

23286563021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902322.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 23286563021 in words is "twenty-three billion, two hundred eighty-six million, five hundred sixty-three thousand, twenty-one".