23008976991 has 384 divisors, whose sum is σ = 50653209600. Its totient is φ = 10111288320.

The previous prime is 23008976983. The next prime is 23008977007. The reversal of 23008976991 is 19967980032.

It is not a de Polignac number, because 23008976991 - 2³ = 23008976983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23008976911) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 132999781 + ... + 132999953.

It is an arithmetic number, because the mean of its divisors is an integer number (131909400).

Almost surely, 2^23008976991 is an apocalyptic number.

23008976991 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23008976991 is an abundant number, since it is smaller than the sum of its proper divisors (27644232609).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23008976991 is a wasteful number, since it uses less digits than its factorization.

23008976991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

It can be divided in two parts, 23008 and 976991, that added together give a palindrome (999999).

The spelling of 23008976991 in words is "twenty-three billion, eight million, nine hundred seventy-six thousand, nine hundred ninety-one".