6891084378792 has 48 divisors (see below), whose sum is σ = 18751805479680. Its totient is φ = 2286141732000.

The previous prime is 6891084378769. The next prime is 6891084378809. The reversal of 6891084378792 is 2978734801986.

6891084378792 is a `hidden beast` number, since 6 + 8 + 9 + 108 + 437 + 87 + 9 + 2 = 666.

It is a super-2 number, since 2×6891084378792² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 6891084378792.

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 11 ways as a sum of consecutive naturals, for example, 226784584 + ... + 226814967.

It is an arithmetic number, because the mean of its divisors is an integer number (390662614160).

Almost surely, 2^{6891084378792} is an apocalyptic number.

It is an amenable number.

6891084378792 is an abundant number, since it is smaller than the sum of its proper divisors (11860721100888).

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

6891084378792 is a wasteful number, since it uses less digits than its factorization.

6891084378792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453599774 (or 453599767 counting only the distinct ones).

The product of its (nonzero) digits is 292626432, while the sum is 72.

The spelling of 6891084378792 in words is "six trillion, eight hundred ninety-one billion, eighty-four million, three hundred seventy-eight thousand, seven hundred ninety-two".