77401746680685 has 32 divisors (see below), whose sum is σ = 141615638648832. Its totient is φ = 35363401588800.

The previous prime is 77401746680633. The next prime is 77401746680693. The reversal of 77401746680685 is 58608664710477.

It is not a de Polignac number, because 77401746680685 - 2¹² = 77401746676589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210795241 + ... + 211162110.

It is an arithmetic number, because the mean of its divisors is an integer number (4425488707776).

Almost surely, 2^{77401746680685} is an apocalyptic number.

It is an amenable number.

77401746680685 is a deficient number, since it is larger than the sum of its proper divisors (64213891968147).

77401746680685 is a wasteful number, since it uses less digits than its factorization.

77401746680685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421959113.

The product of its (nonzero) digits is 379330560, while the sum is 69.

The spelling of 77401746680685 in words is "seventy-seven trillion, four hundred one billion, seven hundred forty-six million, six hundred eighty thousand, six hundred eighty-five".