13765831061 has 2 divisors, whose sum is σ = 13765831062. Its totient is φ = 13765831060.

The previous prime is 13765831043. The next prime is 13765831087. The reversal of 13765831061 is 16013856731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12603430225 + 1162400836 = 112265^2 + 34094^2 .

It is a cyclic number.

It is not a de Polignac number, because 13765831061 - 2³⁰ = 12692089237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13765830061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6882915530 + 6882915531.

It is an arithmetic number, because the mean of its divisors is an integer number (6882915531).

Almost surely, 2^13765831061 is an apocalyptic number.

It is an amenable number.

13765831061 is a deficient number, since it is larger than the sum of its proper divisors (1).

13765831061 is an equidigital number, since it uses as much as digits as its factorization.

13765831061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 13765831061 in words is "thirteen billion, seven hundred sixty-five million, eight hundred thirty-one thousand, sixty-one".