786821372512 has 48 divisors (see below), whose sum is σ = 1772171799552. Its totient is φ = 336861786240.

The previous prime is 786821372471. The next prime is 786821372527. The reversal of 786821372512 is 215273128687.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 786821372512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1591248 + ... + 2026255.

It is an arithmetic number, because the mean of its divisors is an integer number (36920245824).

Almost surely, 2^786821372512 is an apocalyptic number.

It is an amenable number.

786821372512 is an abundant number, since it is smaller than the sum of its proper divisors (985350427040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

786821372512 is a wasteful number, since it uses less digits than its factorization.

786821372512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3618491 (or 3618483 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 52.

The spelling of 786821372512 in words is "seven hundred eighty-six billion, eight hundred twenty-one million, three hundred seventy-two thousand, five hundred twelve".