765045855361 has 2 divisors, whose sum is σ = 765045855362. Its totient is φ = 765045855360.

The previous prime is 765045855349. The next prime is 765045855389. The reversal of 765045855361 is 163558540567.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442258250625 + 322787604736 = 665025^2 + 568144^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-765045855361 is a prime.

It is a super-3 number, since 3×765045855361³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (765045855461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382522927680 + 382522927681.

It is an arithmetic number, because the mean of its divisors is an integer number (382522927681).

Almost surely, 2^765045855361 is an apocalyptic number.

It is an amenable number.

765045855361 is a deficient number, since it is larger than the sum of its proper divisors (1).

765045855361 is an equidigital number, since it uses as much as digits as its factorization.

765045855361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120000, while the sum is 55.

The spelling of 765045855361 in words is "seven hundred sixty-five billion, forty-five million, eight hundred fifty-five thousand, three hundred sixty-one".