86991981118 has 16 divisors (see below), whose sum is σ = 156978011520. Its totient is φ = 35320052376.

The previous prime is 86991981101. The next prime is 86991981121. The reversal of 86991981118 is 81118919968.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163518496 + ... + 163519027.

It is an arithmetic number, because the mean of its divisors is an integer number (9811125720).

Almost surely, 2^86991981118 is an apocalyptic number.

86991981118 is a deficient number, since it is larger than the sum of its proper divisors (69986030402).

86991981118 is a wasteful number, since it uses less digits than its factorization.

86991981118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327037551.

The product of its digits is 2239488, while the sum is 61.

The spelling of 86991981118 in words is "eighty-six billion, nine hundred ninety-one million, nine hundred eighty-one thousand, one hundred eighteen".