23212588643 has 4 divisors (see below), whose sum is σ = 23296388880. Its totient is φ = 23128788408.

The previous prime is 23212588621. The next prime is 23212588757. The reversal of 23212588643 is 34688521232.

It is a happy number.

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 23212588643 - 2¹⁸ = 23212326499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23212588594 and 23212588603.

It is not an unprimeable number, because it can be changed into a prime (23212588543) 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, 41899703 + ... + 41900256.

It is an arithmetic number, because the mean of its divisors is an integer number (5824097220).

Almost surely, 2^23212588643 is an apocalyptic number.

23212588643 is a deficient number, since it is larger than the sum of its proper divisors (83800237).

23212588643 is an equidigital number, since it uses as much as digits as its factorization.

23212588643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83800236.

The product of its digits is 552960, while the sum is 44.

The spelling of 23212588643 in words is "twenty-three billion, two hundred twelve million, five hundred eighty-eight thousand, six hundred forty-three".