23190792987 has 4 divisors (see below), whose sum is σ = 30921057320. Its totient is φ = 15460528656.

The previous prime is 23190792983. The next prime is 23190793001. The reversal of 23190792987 is 78929709132.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23190792987 - 2² = 23190792983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23190792983) 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, 3865132162 + ... + 3865132167.

It is an arithmetic number, because the mean of its divisors is an integer number (7730264330).

Almost surely, 2^23190792987 is an apocalyptic number.

23190792987 is a deficient number, since it is larger than the sum of its proper divisors (7730264333).

23190792987 is an equidigital number, since it uses as much as digits as its factorization.

23190792987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7730264332.

The product of its (nonzero) digits is 3429216, while the sum is 57.

The spelling of 23190792987 in words is "twenty-three billion, one hundred ninety million, seven hundred ninety-two thousand, nine hundred eighty-seven".