776605752977 has 4 divisors (see below), whose sum is σ = 785962448880. Its totient is φ = 767249057076.

The previous prime is 776605752941. The next prime is 776605752991. The reversal of 776605752977 is 779257506677.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 776605752977 - 2⁸ = 776605752721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (776605752997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4678347827 + ... + 4678347992.

It is an arithmetic number, because the mean of its divisors is an integer number (196490612220).

Almost surely, 2^776605752977 is an apocalyptic number.

It is an amenable number.

776605752977 is a deficient number, since it is larger than the sum of its proper divisors (9356695903).

776605752977 is an equidigital number, since it uses as much as digits as its factorization.

776605752977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9356695902.

The product of its (nonzero) digits is 272273400, while the sum is 68.

The spelling of 776605752977 in words is "seven hundred seventy-six billion, six hundred five million, seven hundred fifty-two thousand, nine hundred seventy-seven".