23706649081 has 2 divisors, whose sum is σ = 23706649082. Its totient is φ = 23706649080.

The previous prime is 23706649069. The next prime is 23706649091. The reversal of 23706649081 is 18094660732.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18273632400 + 5433016681 = 135180^2 + 73709^2 .

It is a cyclic number.

It is not a de Polignac number, because 23706649081 - 2²⁵ = 23673094649 is a prime.

It is a super-2 number, since 2×23706649081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23706649091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11853324540 + 11853324541.

It is an arithmetic number, because the mean of its divisors is an integer number (11853324541).

Almost surely, 2^23706649081 is an apocalyptic number.

It is an amenable number.

23706649081 is a deficient number, since it is larger than the sum of its proper divisors (1).

23706649081 is an equidigital number, since it uses as much as digits as its factorization.

23706649081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 23706649081 in words is "twenty-three billion, seven hundred six million, six hundred forty-nine thousand, eighty-one".