23420501161 has 2 divisors, whose sum is σ = 23420501162. Its totient is φ = 23420501160.

The previous prime is 23420501149. The next prime is 23420501189. The reversal of 23420501161 is 16110502432.

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., 20755876761 + 2664624400 = 144069^2 + 51620^2 .

It is a cyclic number.

It is not a de Polignac number, because 23420501161 - 2¹⁷ = 23420370089 is a prime.

It is not a weakly prime, because it can be changed into another prime (23420501191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710250580 + 11710250581.

It is an arithmetic number, because the mean of its divisors is an integer number (11710250581).

Almost surely, 2^23420501161 is an apocalyptic number.

It is an amenable number.

23420501161 is a deficient number, since it is larger than the sum of its proper divisors (1).

23420501161 is an equidigital number, since it uses as much as digits as its factorization.

23420501161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 23420501161 in words is "twenty-three billion, four hundred twenty million, five hundred one thousand, one hundred sixty-one".