86784297984 has 132 divisors (see below), whose sum is σ = 256416570696. Its totient is φ = 28255223808.

The previous prime is 86784297961. The next prime is 86784298001. The reversal of 86784297984 is 48979248768.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286792 + ... + 505784.

It is an arithmetic number, because the mean of its divisors is an integer number (1942549778).

Almost surely, 2^86784297984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86784297984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128208285348).

86784297984 is an abundant number, since it is smaller than the sum of its proper divisors (169632272712).

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

86784297984 is a wasteful number, since it uses less digits than its factorization.

86784297984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219062 (or 219041 counting only the distinct ones).

The product of its digits is 390168576, while the sum is 72.

The spelling of 86784297984 in words is "eighty-six billion, seven hundred eighty-four million, two hundred ninety-seven thousand, nine hundred eighty-four".