23233955557 has 4 divisors (see below), whose sum is σ = 23234411980. Its totient is φ = 23233499136.

The previous prime is 23233955483. The next prime is 23233955561. The reversal of 23233955557 is 75555933232.

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 16351759876 + 6882195681 = 127874^2 + 82959^2 .

It is a cyclic number.

It is not a de Polignac number, because 23233955557 - 2⁷ = 23233955429 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 23233955557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23233955567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140658 + ... + 257395.

It is an arithmetic number, because the mean of its divisors is an integer number (5808602995).

Almost surely, 2^23233955557 is an apocalyptic number.

It is an amenable number.

23233955557 is a deficient number, since it is larger than the sum of its proper divisors (456423).

23233955557 is an equidigital number, since it uses as much as digits as its factorization.

23233955557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456422.

The product of its digits is 4252500, while the sum is 49.

The spelling of 23233955557 in words is "twenty-three billion, two hundred thirty-three million, nine hundred fifty-five thousand, five hundred fifty-seven".