233678521623 has 4 divisors (see below), whose sum is σ = 311571362168. Its totient is φ = 155785681080.

The previous prime is 233678521561. The next prime is 233678521669. The reversal of 233678521623 is 326125876332.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 233678521623 - 2⁸ = 233678521367 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 (233678521693) 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, 38946420268 + ... + 38946420273.

It is an arithmetic number, because the mean of its divisors is an integer number (77892840542).

Almost surely, 2^233678521623 is an apocalyptic number.

233678521623 is a deficient number, since it is larger than the sum of its proper divisors (77892840545).

233678521623 is an equidigital number, since it uses as much as digits as its factorization.

233678521623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77892840544.

The product of its digits is 2177280, while the sum is 48.

The spelling of 233678521623 in words is "two hundred thirty-three billion, six hundred seventy-eight million, five hundred twenty-one thousand, six hundred twenty-three".