677855558777 has 16 divisors (see below), whose sum is σ = 713070864000. Its totient is φ = 643511831424.

The previous prime is 677855558773. The next prime is 677855558801. The reversal of 677855558777 is 777855558776.

It is not a de Polignac number, because 677855558777 - 2² = 677855558773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 677855558698 and 677855558707.

It is not an unprimeable number, because it can be changed into a prime (677855558771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271613 + ... + 1195610.

It is an arithmetic number, because the mean of its divisors is an integer number (44566929000).

Almost surely, 2^677855558777 is an apocalyptic number.

It is an amenable number.

677855558777 is a deficient number, since it is larger than the sum of its proper divisors (35215305223).

677855558777 is a wasteful number, since it uses less digits than its factorization.

677855558777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467520.

The product of its digits is 4033680000, while the sum is 77.

Subtracting 677855558777 from its reverse (777855558776), we obtain a palindrome (99999999999).

The spelling of 677855558777 in words is "six hundred seventy-seven billion, eight hundred fifty-five million, five hundred fifty-eight thousand, seven hundred seventy-seven".