82161088850 has 12 divisors (see below), whose sum is σ = 152819625354. Its totient is φ = 32864435520.

The previous prime is 82161088847. The next prime is 82161088873. The reversal of 82161088850 is 5888016128.

It can be written as a sum of positive squares in 3 ways, for example, as 45198334801 + 36962754049 = 212599^2 + 192257^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 82161088795 and 82161088804.

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 5 ways as a sum of consecutive naturals, for example, 821610839 + ... + 821610938.

Almost surely, 2^82161088850 is an apocalyptic number.

82161088850 is a deficient number, since it is larger than the sum of its proper divisors (70658536504).

82161088850 is a wasteful number, since it uses less digits than its factorization.

82161088850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643221789 (or 1643221784 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 47.

The spelling of 82161088850 in words is "eighty-two billion, one hundred sixty-one million, eighty-eight thousand, eight hundred fifty".