861286696399 has 8 divisors (see below), whose sum is σ = 869281590320. Its totient is φ = 853293496896.

The previous prime is 861286696393. The next prime is 861286696463. The reversal of 861286696399 is 993696682168.

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 861286696399 - 2²⁵ = 861253141967 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 (861286696393) 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, 609364 + ... + 1447030.

It is an arithmetic number, because the mean of its divisors is an integer number (108660198790).

Almost surely, 2^861286696399 is an apocalyptic number.

861286696399 is a deficient number, since it is larger than the sum of its proper divisors (7994893921).

861286696399 is a wasteful number, since it uses less digits than its factorization.

861286696399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847209.

The product of its digits is 362797056, while the sum is 73.

The spelling of 861286696399 in words is "eight hundred sixty-one billion, two hundred eighty-six million, six hundred ninety-six thousand, three hundred ninety-nine".