23040737261 has 2 divisors, whose sum is σ = 23040737262. Its totient is φ = 23040737260.

The previous prime is 23040737231. The next prime is 23040737309. The reversal of 23040737261 is 16273704032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22652056036 + 388681225 = 150506^2 + 19715^2 .

It is a cyclic number.

It is not a de Polignac number, because 23040737261 - 2³⁴ = 5860868077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23040737221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11520368630 + 11520368631.

It is an arithmetic number, because the mean of its divisors is an integer number (11520368631).

Almost surely, 2^23040737261 is an apocalyptic number.

It is an amenable number.

23040737261 is a deficient number, since it is larger than the sum of its proper divisors (1).

23040737261 is an equidigital number, since it uses as much as digits as its factorization.

23040737261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 35.

The spelling of 23040737261 in words is "twenty-three billion, forty million, seven hundred thirty-seven thousand, two hundred sixty-one".