786861005861 has 8 divisors (see below), whose sum is σ = 900362400384. Its totient is φ = 673632781200.

The previous prime is 786861005813. The next prime is 786861005867. The reversal of 786861005861 is 168500168687.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 786861005861 - 2¹⁴ = 786860989477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 786861005797 and 786861005806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (786861005867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68286290 + ... + 68297811.

It is an arithmetic number, because the mean of its divisors is an integer number (112545300048).

Almost surely, 2^786861005861 is an apocalyptic number.

It is an amenable number.

786861005861 is a deficient number, since it is larger than the sum of its proper divisors (113501394523).

786861005861 is a wasteful number, since it uses less digits than its factorization.

786861005861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136584931.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 786861005861 in words is "seven hundred eighty-six billion, eight hundred sixty-one million, five thousand, eight hundred sixty-one".