76619619664065 has 24 divisors (see below), whose sum is σ = 137386904227560. Its totient is φ = 39454700699904.

The previous prime is 76619619664051. The next prime is 76619619664069. The reversal of 76619619664065 is 56046691691667.

76619619664065 is a `hidden beast` number, since 7 + 6 + 61 + 96 + 19 + 66 + 406 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 117885102336 + 76501734561729 = 343344^2 + 8746527^2 .

It is not a de Polignac number, because 76619619664065 - 2⁵ = 76619619664033 is a prime.

It is a super-2 number, since 2×76619619664065² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 76619619663984 and 76619619664002.

It is not an unprimeable number, because it can be changed into a prime (76619619664069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29356174812 + ... + 29356177421.

It is an arithmetic number, because the mean of its divisors is an integer number (5724454342815).

Almost surely, 2^{76619619664065} is an apocalyptic number.

It is an amenable number.

76619619664065 is a deficient number, since it is larger than the sum of its proper divisors (60767284563495).

76619619664065 is a wasteful number, since it uses less digits than its factorization.

76619619664065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58712352273 (or 58712352270 counting only the distinct ones).

The product of its (nonzero) digits is 529079040, while the sum is 72.

The spelling of 76619619664065 in words is "seventy-six trillion, six hundred nineteen billion, six hundred nineteen million, six hundred sixty-four thousand, sixty-five".