76959813617 has 2 divisors, whose sum is σ = 76959813618. Its totient is φ = 76959813616.

The previous prime is 76959813577. The next prime is 76959813659. The reversal of 76959813617 is 71631895967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41174903056 + 35784910561 = 202916^2 + 189169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76959813617 is a prime.

It is a super-3 number, since 3×76959813617³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 76959813617.

It is not a weakly prime, because it can be changed into another prime (76959813017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38479906808 + 38479906809.

It is an arithmetic number, because the mean of its divisors is an integer number (38479906809).

Almost surely, 2^76959813617 is an apocalyptic number.

It is an amenable number.

76959813617 is a deficient number, since it is larger than the sum of its proper divisors (1).

76959813617 is an equidigital number, since it uses as much as digits as its factorization.

76959813617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17146080, while the sum is 62.

The spelling of 76959813617 in words is "seventy-six billion, nine hundred fifty-nine million, eight hundred thirteen thousand, six hundred seventeen".