77964846667 has 16 divisors (see below), whose sum is σ = 84497288832. Its totient is φ = 71649728640.

The previous prime is 77964846653. The next prime is 77964846691. The reversal of 77964846667 is 76664846977.

It is a de Polignac number, because none of the positive numbers 2^k-77964846667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77964846596 and 77964846605.

It is not an unprimeable number, because it can be changed into a prime (77964846067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2595468 + ... + 2625334.

It is an arithmetic number, because the mean of its divisors is an integer number (5281080552).

Almost surely, 2^77964846667 is an apocalyptic number.

77964846667 is a deficient number, since it is larger than the sum of its proper divisors (6532442165).

77964846667 is a wasteful number, since it uses less digits than its factorization.

77964846667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33498.

The product of its digits is 512096256, while the sum is 70.

The spelling of 77964846667 in words is "seventy-seven billion, nine hundred sixty-four million, eight hundred forty-six thousand, six hundred sixty-seven".