861016685275 has 6 divisors (see below), whose sum is σ = 1067660689772. Its totient is φ = 688813348200.

The previous prime is 861016685261. The next prime is 861016685297. The reversal of 861016685275 is 572586610168.

It is not a de Polignac number, because 861016685275 - 2³⁷ = 723577731803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17220333681 + ... + 17220333730.

Almost surely, 2^861016685275 is an apocalyptic number.

861016685275 is a deficient number, since it is larger than the sum of its proper divisors (206644004497).

861016685275 is a wasteful number, since it uses less digits than its factorization.

861016685275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34440667421 (or 34440667416 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 861016685275 in words is "eight hundred sixty-one billion, sixteen million, six hundred eighty-five thousand, two hundred seventy-five".