232739516921 has 4 divisors (see below), whose sum is σ = 244988965200. Its totient is φ = 220490068644.

The previous prime is 232739516917. The next prime is 232739516963. The reversal of 232739516921 is 129615937232.

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 232739516921 - 2² = 232739516917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 232739516921.

It is not an unprimeable number, because it can be changed into a prime (232739516221) 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, 6124724111 + ... + 6124724148.

It is an arithmetic number, because the mean of its divisors is an integer number (61247241300).

Almost surely, 2^232739516921 is an apocalyptic number.

It is an amenable number.

232739516921 is a deficient number, since it is larger than the sum of its proper divisors (12249448279).

232739516921 is a wasteful number, since it uses less digits than its factorization.

232739516921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12249448278.

The product of its digits is 1224720, while the sum is 50.

The spelling of 232739516921 in words is "two hundred thirty-two billion, seven hundred thirty-nine million, five hundred sixteen thousand, nine hundred twenty-one".