76985606749 has 2 divisors, whose sum is σ = 76985606750. Its totient is φ = 76985606748.

The previous prime is 76985606689. The next prime is 76985606767. The reversal of 76985606749 is 94760658967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54332346649 + 22653260100 = 233093^2 + 150510^2 .

It is a cyclic number.

It is not a de Polignac number, because 76985606749 - 2¹¹ = 76985604701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76985606449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38492803374 + 38492803375.

It is an arithmetic number, because the mean of its divisors is an integer number (38492803375).

Almost surely, 2^76985606749 is an apocalyptic number.

It is an amenable number.

76985606749 is a deficient number, since it is larger than the sum of its proper divisors (1).

76985606749 is an equidigital number, since it uses as much as digits as its factorization.

76985606749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 137168640, while the sum is 67.

The spelling of 76985606749 in words is "seventy-six billion, nine hundred eighty-five million, six hundred six thousand, seven hundred forty-nine".