86831384544 has 36 divisors (see below), whose sum is σ = 246926750616. Its totient is φ = 28943794752.

The previous prime is 86831384543. The next prime is 86831384557. The reversal of 86831384544 is 44548313868.

It is a happy number.

86831384544 is a `hidden beast` number, since 8 + 6 + 8 + 3 + 13 + 84 + 544 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86831384543) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 150748644 + ... + 150749219.

It is an arithmetic number, because the mean of its divisors is an integer number (6859076406).

Almost surely, 2^86831384544 is an apocalyptic number.

It is an amenable number.

86831384544 is an abundant number, since it is smaller than the sum of its proper divisors (160095366072).

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

86831384544 is a wasteful number, since it uses less digits than its factorization.

86831384544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301497879 (or 301497868 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 54.

The spelling of 86831384544 in words is "eighty-six billion, eight hundred thirty-one million, three hundred eighty-four thousand, five hundred forty-four".