82999999999891 has 96 divisors (see below), whose sum is σ = 94066247987712. Its totient is φ = 72772814499840.

The previous prime is 82999999999879. The next prime is 82999999999901. The reversal of 82999999999891 is 19899999999928.

It is not a de Polignac number, because 82999999999891 - 2¹¹ = 82999999997843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82999999999391) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 136738055710 + ... + 136738056316.

It is an arithmetic number, because the mean of its divisors is an integer number (979856749872).

Almost surely, 2^{82999999999891} is an apocalyptic number.

82999999999891 is a deficient number, since it is larger than the sum of its proper divisors (11066247987821).

82999999999891 is a wasteful number, since it uses less digits than its factorization.

82999999999891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533 (or 1490 counting only the distinct ones).

The product of its digits is 446308403328, while the sum is 109.

The spelling of 82999999999891 in words is "eighty-two trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred ninety-one".