861110075280087 has 12 divisors (see below), whose sum is σ = 1243825991368480. Its totient is φ = 574073232562368.

The previous prime is 861110075280079. The next prime is 861110075280113. The reversal of 861110075280087 is 780082570011168.

861110075280087 is a `hidden beast` number, since 8 + 6 + 1 + 1 + 100 + 7 + 528 + 0 + 0 + 8 + 7 = 666.

It is not a de Polignac number, because 861110075280087 - 2³ = 861110075280079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861110075280047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31780623 + ... + 52270719.

Almost surely, 2^{861110075280087} is an apocalyptic number.

861110075280087 is a deficient number, since it is larger than the sum of its proper divisors (382715916088393).

861110075280087 is a wasteful number, since it uses less digits than its factorization.

861110075280087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25159622 (or 25159619 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 54.

The spelling of 861110075280087 in words is "eight hundred sixty-one trillion, one hundred ten billion, seventy-five million, two hundred eighty thousand, eighty-seven".