23139004077 has 36 divisors (see below), whose sum is σ = 40319837376. Its totient is φ = 13222281240.

The previous prime is 23139004043. The next prime is 23139004081. The reversal of 23139004077 is 77040093132.

It is not a de Polignac number, because 23139004077 - 2⁶ = 23139004013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23139004027) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 959749 + ... + 983562.

Almost surely, 2^23139004077 is an apocalyptic number.

23139004077 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

23139004077 is a deficient number, since it is larger than the sum of its proper divisors (17180833299).

23139004077 is an equidigital number, since it uses as much as digits as its factorization.

23139004077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943340 (or 1943321 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

It can be divided in two parts, 23 and 139004077, that added together give a square (139004100 = 11790²).

The spelling of 23139004077 in words is "twenty-three billion, one hundred thirty-nine million, four thousand, seventy-seven".