855779977558 has 24 divisors (see below), whose sum is σ = 1412457021864. Its totient is φ = 388582619040.

The previous prime is 855779977529. The next prime is 855779977567.

855779977558 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1624716 + ... + 2085967.

It is an arithmetic number, because the mean of its divisors is an integer number (58852375911).

Almost surely, 2^855779977558 is an apocalyptic number.

855779977558 is a deficient number, since it is larger than the sum of its proper divisors (556677044306).

855779977558 is a wasteful number, since it uses less digits than its factorization.

855779977558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711660 (or 3711649 counting only the distinct ones).

The product of its digits is 7779240000, while the sum is 82.

The spelling of 855779977558 in words is "eight hundred fifty-five billion, seven hundred seventy-nine million, nine hundred seventy-seven thousand, five hundred fifty-eight".