786871686477 has 16 divisors (see below), whose sum is σ = 1067892959232. Its totient is φ = 515297563200.

The previous prime is 786871686457. The next prime is 786871686479. The reversal of 786871686477 is 774686178687.

It is not a de Polignac number, because 786871686477 - 2¹⁵ = 786871653709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 786871686399 and 786871686408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (786871686479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10185678 + ... + 10262639.

It is an arithmetic number, because the mean of its divisors is an integer number (66743309952).

Almost surely, 2^786871686477 is an apocalyptic number.

It is an amenable number.

786871686477 is a deficient number, since it is larger than the sum of its proper divisors (281021272755).

786871686477 is a wasteful number, since it uses less digits than its factorization.

786871686477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20448548.

The product of its digits is 1062125568, while the sum is 75.

The spelling of 786871686477 in words is "seven hundred eighty-six billion, eight hundred seventy-one million, six hundred eighty-six thousand, four hundred seventy-seven".