23729233321 has 4 divisors (see below), whose sum is σ = 23730668500. Its totient is φ = 23727798144.

The previous prime is 23729233303. The next prime is 23729233387. The reversal of 23729233321 is 12333292732.

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 11806995600 + 11922237721 = 108660^2 + 109189^2 .

It is a cyclic number.

It is not a de Polignac number, because 23729233321 - 2¹⁵ = 23729200553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23729233721) 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, 692496 + ... + 725953.

It is an arithmetic number, because the mean of its divisors is an integer number (5932667125).

Almost surely, 2^23729233321 is an apocalyptic number.

It is an amenable number.

23729233321 is a deficient number, since it is larger than the sum of its proper divisors (1435179).

23729233321 is a wasteful number, since it uses less digits than its factorization.

23729233321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435178.

The product of its digits is 81648, while the sum is 37.

The spelling of 23729233321 in words is "twenty-three billion, seven hundred twenty-nine million, two hundred thirty-three thousand, three hundred twenty-one".