23201345161 has 2 divisors, whose sum is σ = 23201345162. Its totient is φ = 23201345160.

The previous prime is 23201345149. The next prime is 23201345239. The reversal of 23201345161 is 16154310232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17737178761 + 5464166400 = 133181^2 + 73920^2 .

It is a cyclic number.

It is not a de Polignac number, because 23201345161 - 2²⁵ = 23167790729 is a prime.

It is not a weakly prime, because it can be changed into another prime (23201348161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11600672580 + 11600672581.

It is an arithmetic number, because the mean of its divisors is an integer number (11600672581).

Almost surely, 2^23201345161 is an apocalyptic number.

It is an amenable number.

23201345161 is a deficient number, since it is larger than the sum of its proper divisors (1).

23201345161 is an equidigital number, since it uses as much as digits as its factorization.

23201345161 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.

Adding to 23201345161 its reverse (16154310232), we get a palindrome (39355655393).

The spelling of 23201345161 in words is "twenty-three billion, two hundred one million, three hundred forty-five thousand, one hundred sixty-one".