82171662338 has 16 divisors (see below), whose sum is σ = 124787092320. Its totient is φ = 40578938400.

The previous prime is 82171662337. The next prime is 82171662341. The reversal of 82171662338 is 83326617128.

It is a junction number, because it is equal to n+sod(n) for n = 82171662292 and 82171662301.

It is not an unprimeable number, because it can be changed into a prime (82171662337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687923 + ... + 798486.

It is an arithmetic number, because the mean of its divisors is an integer number (7799193270).

Almost surely, 2^82171662338 is an apocalyptic number.

82171662338 is a deficient number, since it is larger than the sum of its proper divisors (42615429982).

82171662338 is a wasteful number, since it uses less digits than its factorization.

82171662338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486753.

The product of its digits is 580608, while the sum is 47.

The spelling of 82171662338 in words is "eighty-two billion, one hundred seventy-one million, six hundred sixty-two thousand, three hundred thirty-eight".