861267841316 has 6 divisors (see below), whose sum is σ = 1507218722310. Its totient is φ = 430633920656.

The previous prime is 861267841271. The next prime is 861267841319. The reversal of 861267841316 is 613148762168.

It can be written as a sum of positive squares in only one way, i.e., 688810362916 + 172457478400 = 829946^2 + 415280^2 .

It is a super-2 number, since 2×861267841316² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (861267841319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107658480161 + ... + 107658480168.

It is an arithmetic number, because the mean of its divisors is an integer number (251203120385).

Almost surely, 2^861267841316 is an apocalyptic number.

It is an amenable number.

861267841316 is a deficient number, since it is larger than the sum of its proper divisors (645950880994).

861267841316 is a wasteful number, since it uses less digits than its factorization.

861267841316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215316960333 (or 215316960331 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 53.

The spelling of 861267841316 in words is "eight hundred sixty-one billion, two hundred sixty-seven million, eight hundred forty-one thousand, three hundred sixteen".