77392446666 has 16 divisors (see below), whose sum is σ = 154926521184. Its totient is φ = 25773877584.

The previous prime is 77392446643. The next prime is 77392446683. The reversal of 77392446666 is 66664429377.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5894056 + ... + 5907171.

It is an arithmetic number, because the mean of its divisors is an integer number (9682907574).

Almost surely, 2^77392446666 is an apocalyptic number.

77392446666 is an abundant number, since it is smaller than the sum of its proper divisors (77534074518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77392446666 is a wasteful number, since it uses less digits than its factorization.

77392446666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11802325.

The product of its digits is 54867456, while the sum is 60.

The spelling of 77392446666 in words is "seventy-seven billion, three hundred ninety-two million, four hundred forty-six thousand, six hundred sixty-six".