13865765377 has 2 divisors, whose sum is σ = 13865765378. Its totient is φ = 13865765376.

The previous prime is 13865765363. The next prime is 13865765383. The reversal of 13865765377 is 77356756831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10064303041 + 3801462336 = 100321^2 + 61656^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13865765377 is a prime.

It is not a weakly prime, because it can be changed into another prime (13865766377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6932882688 + 6932882689.

It is an arithmetic number, because the mean of its divisors is an integer number (6932882689).

Almost surely, 2^13865765377 is an apocalyptic number.

It is an amenable number.

13865765377 is a deficient number, since it is larger than the sum of its proper divisors (1).

13865765377 is an equidigital number, since it uses as much as digits as its factorization.

13865765377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22226400, while the sum is 58.

The spelling of 13865765377 in words is "thirteen billion, eight hundred sixty-five million, seven hundred sixty-five thousand, three hundred seventy-seven".