861375674835 has 48 divisors (see below), whose sum is σ = 1608759944064. Its totient is φ = 423835405056.

The previous prime is 861375674813. The next prime is 861375674837. The reversal of 861375674835 is 538476573168.

It is a happy number.

861375674835 is a `hidden beast` number, since 8 + 6 + 1 + 37 + 567 + 4 + 8 + 35 = 666.

It is not a de Polignac number, because 861375674835 - 2¹² = 861375670739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (861375674837) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 705814 + ... + 1490276.

It is an arithmetic number, because the mean of its divisors is an integer number (33515832168).

Almost surely, 2^861375674835 is an apocalyptic number.

861375674835 is a deficient number, since it is larger than the sum of its proper divisors (747384269229).

861375674835 is a wasteful number, since it uses less digits than its factorization.

861375674835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786364 (or 786361 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 63.

The spelling of 861375674835 in words is "eight hundred sixty-one billion, three hundred seventy-five million, six hundred seventy-four thousand, eight hundred thirty-five".