83181879894 has 16 divisors (see below), whose sum is σ = 172100441520. Its totient is φ = 26771179680.

The previous prime is 83181879829. The next prime is 83181879947. The reversal of 83181879894 is 49897818138.

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 7 ways as a sum of consecutive naturals, for example, 239028217 + ... + 239028564.

It is an arithmetic number, because the mean of its divisors is an integer number (10756277595).

Almost surely, 2^83181879894 is an apocalyptic number.

83181879894 is an abundant number, since it is smaller than the sum of its proper divisors (88918561626).

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

83181879894 is a wasteful number, since it uses less digits than its factorization.

83181879894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478056815.

The product of its digits is 27869184, while the sum is 66.

The spelling of 83181879894 in words is "eighty-three billion, one hundred eighty-one million, eight hundred seventy-nine thousand, eight hundred ninety-four".