23040072997 has 2 divisors, whose sum is σ = 23040072998. Its totient is φ = 23040072996.

The previous prime is 23040072989. The next prime is 23040073031. The reversal of 23040072997 is 79927004032.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17594961316 + 5445111681 = 132646^2 + 73791^2 .

It is a cyclic number.

It is not a de Polignac number, because 23040072997 - 2³ = 23040072989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23040072967) 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 as a sum of consecutive naturals, namely, 11520036498 + 11520036499.

It is an arithmetic number, because the mean of its divisors is an integer number (11520036499).

Almost surely, 2^23040072997 is an apocalyptic number.

It is an amenable number.

23040072997 is a deficient number, since it is larger than the sum of its proper divisors (1).

23040072997 is an equidigital number, since it uses as much as digits as its factorization.

23040072997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 43.

The spelling of 23040072997 in words is "twenty-three billion, forty million, seventy-two thousand, nine hundred ninety-seven".