868307139369 has 24 divisors (see below), whose sum is σ = 1278049560840. Its totient is φ = 567876621312.

The previous prime is 868307139361. The next prime is 868307139373. The reversal of 868307139369 is 963931703868.

868307139369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 189561839769 + 678745299600 = 435387^2 + 823860^2 .

It is not a de Polignac number, because 868307139369 - 2³ = 868307139361 is a prime.

It is a super-2 number, since 2×868307139369² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (868307139361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3747897 + ... + 3972825.

It is an arithmetic number, because the mean of its divisors is an integer number (53252065035).

Almost surely, 2^868307139369 is an apocalyptic number.

It is an amenable number.

868307139369 is a deficient number, since it is larger than the sum of its proper divisors (409742421471).

868307139369 is a wasteful number, since it uses less digits than its factorization.

868307139369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233081 (or 233078 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 63.

The spelling of 868307139369 in words is "eight hundred sixty-eight billion, three hundred seven million, one hundred thirty-nine thousand, three hundred sixty-nine".