23776748957 has 4 divisors (see below), whose sum is σ = 25605729660. Its totient is φ = 21947768256.

The previous prime is 23776748927. The next prime is 23776748971. The reversal of 23776748957 is 75984767732.

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 5087398276 + 18689350681 = 71326^2 + 136709^2 .

It is a cyclic number.

It is not a de Polignac number, because 23776748957 - 2¹⁶ = 23776683421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23776748893 and 23776748902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23776748917) 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, 914490332 + ... + 914490357.

It is an arithmetic number, because the mean of its divisors is an integer number (6401432415).

Almost surely, 2^23776748957 is an apocalyptic number.

It is an amenable number.

23776748957 is a deficient number, since it is larger than the sum of its proper divisors (1828980703).

23776748957 is a wasteful number, since it uses less digits than its factorization.

23776748957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828980702.

The product of its digits is 124467840, while the sum is 65.

The spelling of 23776748957 in words is "twenty-three billion, seven hundred seventy-six million, seven hundred forty-eight thousand, nine hundred fifty-seven".