23765121956 has 24 divisors (see below), whose sum is σ = 44893638720. Its totient is φ = 10973998112.

The previous prime is 23765121907. The next prime is 23765121959. The reversal of 23765121956 is 65912156732.

It is a self number, because there is not a number n which added to its sum of digits gives 23765121956.

It is not an unprimeable number, because it can be changed into a prime (23765121959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4451066 + ... + 4456401.

It is an arithmetic number, because the mean of its divisors is an integer number (1870568280).

Almost surely, 2^23765121956 is an apocalyptic number.

It is an amenable number.

23765121956 is a deficient number, since it is larger than the sum of its proper divisors (21128516764).

23765121956 is a wasteful number, since it uses less digits than its factorization.

23765121956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8907523 (or 8907521 counting only the distinct ones).

The product of its digits is 680400, while the sum is 47.

The spelling of 23765121956 in words is "twenty-three billion, seven hundred sixty-five million, one hundred twenty-one thousand, nine hundred fifty-six".