23040853949 has 2 divisors, whose sum is σ = 23040853950. Its totient is φ = 23040853948.

The previous prime is 23040853931. The next prime is 23040854017. The reversal of 23040853949 is 94935804032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22464613924 + 576240025 = 149882^2 + 24005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23040853949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23040853349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11520426974 + 11520426975.

It is an arithmetic number, because the mean of its divisors is an integer number (11520426975).

Almost surely, 2^23040853949 is an apocalyptic number.

It is an amenable number.

23040853949 is a deficient number, since it is larger than the sum of its proper divisors (1).

23040853949 is an equidigital number, since it uses as much as digits as its factorization.

23040853949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 23040853949 in words is "twenty-three billion, forty million, eight hundred fifty-three thousand, nine hundred forty-nine".