84074381784 has 64 divisors (see below), whose sum is σ = 234517248000. Its totient is φ = 27907518240.

The previous prime is 84074381779. The next prime is 84074381801. The reversal of 84074381784 is 48718347048.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 84074381784.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762672 + ... + 865919.

It is an arithmetic number, because the mean of its divisors is an integer number (3664332000).

Almost surely, 2^84074381784 is an apocalyptic number.

It is an amenable number.

84074381784 is an abundant number, since it is smaller than the sum of its proper divisors (150442866216).

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

84074381784 is a wasteful number, since it uses less digits than its factorization.

84074381784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628845 (or 1628835 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 54.

The spelling of 84074381784 in words is "eighty-four billion, seventy-four million, three hundred eighty-one thousand, seven hundred eighty-four".