23040451009 has 2 divisors, whose sum is σ = 23040451010. Its totient is φ = 23040451008.

The previous prime is 23040450973. The next prime is 23040451051. The reversal of 23040451009 is 90015404032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18761328784 + 4279122225 = 136972^2 + 65415^2 .

It is a cyclic number.

It is not a de Polignac number, because 23040451009 - 2¹⁵ = 23040418241 is a prime.

It is not a weakly prime, because it can be changed into another prime (23040458009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11520225504 + 11520225505.

It is an arithmetic number, because the mean of its divisors is an integer number (11520225505).

Almost surely, 2^23040451009 is an apocalyptic number.

It is an amenable number.

23040451009 is a deficient number, since it is larger than the sum of its proper divisors (1).

23040451009 is an equidigital number, since it uses as much as digits as its factorization.

23040451009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 23040451009 in words is "twenty-three billion, forty million, four hundred fifty-one thousand, nine".