851295631098 has 128 divisors (see below), whose sum is σ = 2122900254720. Its totient is φ = 224229125120.

The previous prime is 851295631093. The next prime is 851295631111. The reversal of 851295631098 is 890136592158.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (851295631091) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 179611 + ... + 1317137.

It is an arithmetic number, because the mean of its divisors is an integer number (16585158240).

Almost surely, 2^851295631098 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851295631098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061450127360).

851295631098 is an abundant number, since it is smaller than the sum of its proper divisors (1271604623622).

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

851295631098 is a wasteful number, since it uses less digits than its factorization.

851295631098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137612.

The product of its (nonzero) digits is 4665600, while the sum is 57.

The spelling of 851295631098 in words is "eight hundred fifty-one billion, two hundred ninety-five million, six hundred thirty-one thousand, ninety-eight".