855195591558 has 32 divisors (see below), whose sum is σ = 2132435761920. Its totient is φ = 222128724960.

The previous prime is 855195591541. The next prime is 855195591571.

855195591558 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925535893 + ... + 925536816.

It is an arithmetic number, because the mean of its divisors is an integer number (66638617560).

Almost surely, 2^855195591558 is an apocalyptic number.

855195591558 is an abundant number, since it is smaller than the sum of its proper divisors (1277240170362).

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

855195591558 is a wasteful number, since it uses less digits than its factorization.

855195591558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851072732.

The product of its digits is 81000000, while the sum is 66.

The spelling of 855195591558 in words is "eight hundred fifty-five billion, one hundred ninety-five million, five hundred ninety-one thousand, five hundred fifty-eight".