23009465081 has 2 divisors, whose sum is σ = 23009465082. Its totient is φ = 23009465080.

The previous prime is 23009465071. The next prime is 23009465111. The reversal of 23009465081 is 18056490032.

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., 22482303481 + 527161600 = 149941^2 + 22960^2 .

It is a cyclic number.

It is not a de Polignac number, because 23009465081 - 2¹⁰ = 23009464057 is a prime.

It is a super-2 number, since 2×23009465081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23009465051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11504732540 + 11504732541.

It is an arithmetic number, because the mean of its divisors is an integer number (11504732541).

Almost surely, 2^23009465081 is an apocalyptic number.

It is an amenable number.

23009465081 is a deficient number, since it is larger than the sum of its proper divisors (1).

23009465081 is an equidigital number, since it uses as much as digits as its factorization.

23009465081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 23009465081 in words is "twenty-three billion, nine million, four hundred sixty-five thousand, eighty-one".