776584516055 has 4 divisors (see below), whose sum is σ = 931901419272. Its totient is φ = 621267612840.

The previous prime is 776584516031. The next prime is 776584516069. The reversal of 776584516055 is 550615485677.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550615485677 = 953 ⋅577770709.

It is a de Polignac number, because none of the positive numbers 2^k-776584516055 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 776584515985 and 776584516003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77658451601 + ... + 77658451610.

It is an arithmetic number, because the mean of its divisors is an integer number (232975354818).

Almost surely, 2^776584516055 is an apocalyptic number.

776584516055 is a deficient number, since it is larger than the sum of its proper divisors (155316903217).

776584516055 is a wasteful number, since it uses less digits than its factorization.

776584516055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155316903216.

The product of its (nonzero) digits is 35280000, while the sum is 59.

The spelling of 776584516055 in words is "seven hundred seventy-six billion, five hundred eighty-four million, five hundred sixteen thousand, fifty-five".