77804734766 has 16 divisors (see below), whose sum is σ = 129217092480. Its totient is φ = 34837940280.

The previous prime is 77804734759. The next prime is 77804734793. The reversal of 77804734766 is 66743740877.

It is a congruent 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, 26390906 + ... + 26393853.

It is an arithmetic number, because the mean of its divisors is an integer number (8076068280).

Almost surely, 2^77804734766 is an apocalyptic number.

77804734766 is a deficient number, since it is larger than the sum of its proper divisors (51412357714).

77804734766 is a wasteful number, since it uses less digits than its factorization.

77804734766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52784839.

The product of its (nonzero) digits is 33191424, while the sum is 59.

The spelling of 77804734766 in words is "seventy-seven billion, eight hundred four million, seven hundred thirty-four thousand, seven hundred sixty-six".