23119999961 has 2 divisors, whose sum is σ = 23119999962. Its totient is φ = 23119999960.

The previous prime is 23119999943. The next prime is 23120000027. The reversal of 23119999961 is 16999991132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22959825625 + 160174336 = 151525^2 + 12656^2 .

It is a cyclic number.

It is not a de Polignac number, because 23119999961 - 2³⁰ = 22046258137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23119999961.

It is not a weakly prime, because it can be changed into another prime (23119993961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11559999980 + 11559999981.

It is an arithmetic number, because the mean of its divisors is an integer number (11559999981).

Almost surely, 2^23119999961 is an apocalyptic number.

It is an amenable number.

23119999961 is a deficient number, since it is larger than the sum of its proper divisors (1).

23119999961 is an equidigital number, since it uses as much as digits as its factorization.

23119999961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2125764, while the sum is 59.

The spelling of 23119999961 in words is "twenty-three billion, one hundred nineteen million, nine hundred ninety-nine thousand, nine hundred sixty-one".