76649013689 has 2 divisors, whose sum is σ = 76649013690. Its totient is φ = 76649013688.

The previous prime is 76649013629. The next prime is 76649013737. The reversal of 76649013689 is 98631094667.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65903618089 + 10745395600 = 256717^2 + 103660^2 .

It is a cyclic number.

It is not a de Polignac number, because 76649013689 - 2⁸ = 76649013433 is a prime.

It is not a weakly prime, because it can be changed into another prime (76649013629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38324506844 + 38324506845.

It is an arithmetic number, because the mean of its divisors is an integer number (38324506845).

Almost surely, 2^76649013689 is an apocalyptic number.

It is an amenable number.

76649013689 is a deficient number, since it is larger than the sum of its proper divisors (1).

76649013689 is an equidigital number, since it uses as much as digits as its factorization.

76649013689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11757312, while the sum is 59.

The spelling of 76649013689 in words is "seventy-six billion, six hundred forty-nine million, thirteen thousand, six hundred eighty-nine".