861322385835 has 16 divisors (see below), whose sum is σ = 1531239797280. Its totient is φ = 459371939040.

The previous prime is 861322385827. The next prime is 861322385843. The reversal of 861322385835 is 538583223168.

861322385835 is a `hidden beast` number, since 8 + 6 + 1 + 3 + 22 + 38 + 583 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (861322385827) and next prime (861322385843).

It is not a de Polignac number, because 861322385835 - 2³ = 861322385827 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3190082776 + ... + 3190083045.

It is an arithmetic number, because the mean of its divisors is an integer number (95702487330).

Almost surely, 2^861322385835 is an apocalyptic number.

861322385835 is a deficient number, since it is larger than the sum of its proper divisors (669917411445).

861322385835 is a wasteful number, since it uses less digits than its factorization.

861322385835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6380165835 (or 6380165829 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The spelling of 861322385835 in words is "eight hundred sixty-one billion, three hundred twenty-two million, three hundred eighty-five thousand, eight hundred thirty-five".