776578875677 has 12 divisors (see below), whose sum is σ = 853621557600. Its totient is φ = 705958800360.

The previous prime is 776578875649. The next prime is 776578875769.

776578875677 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 776578875677 - 2⁶ = 776578875613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (776578875617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4779824 + ... + 4939622.

It is an arithmetic number, because the mean of its divisors is an integer number (71135129800).

Almost surely, 2^776578875677 is an apocalyptic number.

It is an amenable number.

776578875677 is a deficient number, since it is larger than the sum of its proper divisors (77042681923).

776578875677 is a wasteful number, since it uses less digits than its factorization.

776578875677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199984 (or 199973 counting only the distinct ones).

The product of its digits is 6776582400, while the sum is 80.

The spelling of 776578875677 in words is "seven hundred seventy-six billion, five hundred seventy-eight million, eight hundred seventy-five thousand, six hundred seventy-seven".