851255444552158 has 16 divisors (see below), whose sum is σ = 1278927706066560. Its totient is φ = 424946231299800.

The previous prime is 851255444552153. The next prime is 851255444552159.

851255444552158 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 851255444552158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851255444552153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71965513 + ... + 82955083.

It is an arithmetic number, because the mean of its divisors is an integer number (79932981629160).

Almost surely, 2^{851255444552158} is an apocalyptic number.

851255444552158 is a deficient number, since it is larger than the sum of its proper divisors (427672261514402).

851255444552158 is a wasteful number, since it uses less digits than its factorization.

851255444552158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11051583.

The product of its digits is 256000000, while the sum is 64.

The spelling of 851255444552158 in words is "eight hundred fifty-one trillion, two hundred fifty-five billion, four hundred forty-four million, five hundred fifty-two thousand, one hundred fifty-eight".