23420511073 has 2 divisors, whose sum is σ = 23420511074. Its totient is φ = 23420511072.

The previous prime is 23420511053. The next prime is 23420511077. The reversal of 23420511073 is 37011502432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19105597729 + 4314913344 = 138223^2 + 65688^2 .

It is a cyclic number.

It is not a de Polignac number, because 23420511073 - 2²⁵ = 23386956641 is a prime.

It is a super-2 number, since 2×23420511073² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23420511077) 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, 11710255536 + 11710255537.

It is an arithmetic number, because the mean of its divisors is an integer number (11710255537).

Almost surely, 2^23420511073 is an apocalyptic number.

It is an amenable number.

23420511073 is a deficient number, since it is larger than the sum of its proper divisors (1).

23420511073 is an equidigital number, since it uses as much as digits as its factorization.

23420511073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The spelling of 23420511073 in words is "twenty-three billion, four hundred twenty million, five hundred eleven thousand, seventy-three".