861264963195 has 128 divisors (see below), whose sum is σ = 1794651586560. Its totient is φ = 342502110720.

The previous prime is 861264963193. The next prime is 861264963199. The reversal of 861264963195 is 591369462168.

861264963195 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 861264963195 - 2¹ = 861264963193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (861264963193) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4866652 + ... + 5040518.

It is an arithmetic number, because the mean of its divisors is an integer number (14020715520).

Almost surely, 2^861264963195 is an apocalyptic number.

861264963195 is an abundant number, since it is smaller than the sum of its proper divisors (933386623365).

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

861264963195 is a wasteful number, since it uses less digits than its factorization.

861264963195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174105.

The product of its digits is 16796160, while the sum is 60.

The spelling of 861264963195 in words is "eight hundred sixty-one billion, two hundred sixty-four million, nine hundred sixty-three thousand, one hundred ninety-five".