76765874489 has 2 divisors, whose sum is σ = 76765874490. Its totient is φ = 76765874488.

The previous prime is 76765874483. The next prime is 76765874519. The reversal of 76765874489 is 98447856767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47595967225 + 29169907264 = 218165^2 + 170792^2 .

It is a cyclic number.

It is not a de Polignac number, because 76765874489 - 2²⁴ = 76749097273 is a prime.

It is a super-2 number, since 2×76765874489² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (76765874483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38382937244 + 38382937245.

It is an arithmetic number, because the mean of its divisors is an integer number (38382937245).

Almost surely, 2^76765874489 is an apocalyptic number.

It is an amenable number.

76765874489 is a deficient number, since it is larger than the sum of its proper divisors (1).

76765874489 is an equidigital number, since it uses as much as digits as its factorization.

76765874489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 568995840, while the sum is 71.

The spelling of 76765874489 in words is "seventy-six billion, seven hundred sixty-five million, eight hundred seventy-four thousand, four hundred eighty-nine".