855267762558 has 64 divisors (see below), whose sum is σ = 1923293963520. Its totient is φ = 251269804800.

The previous prime is 855267762551. The next prime is 855267762589.

855267762558 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 not an unprimeable number, because it can be changed into a prime (855267762551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63013 + ... + 1309391.

It is an arithmetic number, because the mean of its divisors is an integer number (30051468180).

Almost surely, 2^855267762558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855267762558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961646981760).

855267762558 is an abundant number, since it is smaller than the sum of its proper divisors (1068026200962).

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

855267762558 is a wasteful number, since it uses less digits than its factorization.

855267762558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246713.

The product of its digits is 282240000, while the sum is 66.

The spelling of 855267762558 in words is "eight hundred fifty-five billion, two hundred sixty-seven million, seven hundred sixty-two thousand, five hundred fifty-eight".