855549945558 has 96 divisors (see below), whose sum is σ = 2311330125312. Its totient is φ = 222198249600.

The previous prime is 855549945541. The next prime is 855549945577.

855549945558 is a `hidden beast` number, since 85 + 5 + 5 + 4 + 99 + 455 + 5 + 8 = 666.

855549945558 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×855549945558³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16996335 + ... + 17046597.

It is an arithmetic number, because the mean of its divisors is an integer number (24076355472).

Almost surely, 2^855549945558 is an apocalyptic number.

855549945558 is an abundant number, since it is smaller than the sum of its proper divisors (1455780179754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855549945558 is a wasteful number, since it uses less digits than its factorization.

855549945558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62570 (or 62567 counting only the distinct ones).

The product of its digits is 1296000000, while the sum is 72.

The spelling of 855549945558 in words is "eight hundred fifty-five billion, five hundred forty-nine million, nine hundred forty-five thousand, five hundred fifty-eight".