23453236621 has 8 divisors (see below), whose sum is σ = 23561447040. Its totient is φ = 23345069568.

The previous prime is 23453236607. The next prime is 23453236637. The reversal of 23453236621 is 12663235432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23453236621 - 2¹⁹ = 23452712333 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 (23453236691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1649340 + ... + 1663498.

It is an arithmetic number, because the mean of its divisors is an integer number (2945180880).

Almost surely, 2^23453236621 is an apocalyptic number.

It is an amenable number.

23453236621 is a deficient number, since it is larger than the sum of its proper divisors (108210419).

23453236621 is a wasteful number, since it uses less digits than its factorization.

23453236621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21683.

The product of its digits is 155520, while the sum is 37.

The spelling of 23453236621 in words is "twenty-three billion, four hundred fifty-three million, two hundred thirty-six thousand, six hundred twenty-one".