77964846829 has 8 divisors (see below), whose sum is σ = 84715623680. Its totient is φ = 71478806400.

The previous prime is 77964846821. The next prime is 77964846833. The reversal of 77964846829 is 92864846977.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77964846829 - 2³ = 77964846821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77964846821) 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 in 7 ways as a sum of consecutive naturals, for example, 66183492 + ... + 66184669.

It is an arithmetic number, because the mean of its divisors is an integer number (10589452960).

Almost surely, 2^77964846829 is an apocalyptic number.

It is an amenable number.

77964846829 is a deficient number, since it is larger than the sum of its proper divisors (6750776851).

77964846829 is a wasteful number, since it uses less digits than its factorization.

77964846829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132368211.

The product of its digits is 292626432, while the sum is 70.

The spelling of 77964846829 in words is "seventy-seven billion, nine hundred sixty-four million, eight hundred forty-six thousand, eight hundred twenty-nine".