16591139886 has 16 divisors (see below), whose sum is σ = 33194543184. Its totient is φ = 5528336064.

The previous prime is 16591139879. The next prime is 16591139921. The reversal of 16591139886 is 68893119561.

It is a Curzon number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 493341 + ... + 525896.

It is an arithmetic number, because the mean of its divisors is an integer number (2074658949).

Almost surely, 2^16591139886 is an apocalyptic number.

16591139886 is an abundant number, since it is smaller than the sum of its proper divisors (16603403298).

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

16591139886 is a wasteful number, since it uses less digits than its factorization.

16591139886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021955.

The product of its digits is 2799360, while the sum is 57.

The spelling of 16591139886 in words is "sixteen billion, five hundred ninety-one million, one hundred thirty-nine thousand, eight hundred eighty-six".