677855558775 has 24 divisors (see below), whose sum is σ = 1124856726784. Its totient is φ = 360188920800.

The previous prime is 677855558773. The next prime is 677855558801. The reversal of 677855558775 is 577855558776.

It is not a de Polignac number, because 677855558775 - 2¹ = 677855558773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (75).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 677855558697 and 677855558706.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 16655089 + ... + 16695738.

Almost surely, 2^677855558775 is an apocalyptic number.

677855558775 is a deficient number, since it is larger than the sum of its proper divisors (447001168009).

677855558775 is a wasteful number, since it uses less digits than its factorization.

677855558775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33351111 (or 33351106 counting only the distinct ones).

The product of its digits is 2881200000, while the sum is 75.

Subtracting from 677855558775 its reverse (577855558776), we obtain a palindrome (99999999999).

The spelling of 677855558775 in words is "six hundred seventy-seven billion, eight hundred fifty-five million, five hundred fifty-eight thousand, seven hundred seventy-five".