23935243957 has 4 divisors (see below), whose sum is σ = 23988552300. Its totient is φ = 23881935616.

The previous prime is 23935243951. The next prime is 23935243979. The reversal of 23935243957 is 75934253932.

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 20863202481 + 3072041476 = 144441^2 + 55426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23935243957 is a prime.

It is a super-2 number, since 2×23935243957² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23935243951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26653498 + ... + 26654395.

It is an arithmetic number, because the mean of its divisors is an integer number (5997138075).

Almost surely, 2^23935243957 is an apocalyptic number.

It is an amenable number.

23935243957 is a deficient number, since it is larger than the sum of its proper divisors (53308343).

23935243957 is an equidigital number, since it uses as much as digits as its factorization.

23935243957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53308342.

The product of its digits is 6123600, while the sum is 52.

The spelling of 23935243957 in words is "twenty-three billion, nine hundred thirty-five million, two hundred forty-three thousand, nine hundred fifty-seven".