82021804124 has 24 divisors (see below), whose sum is σ = 154914912768. Its totient is φ = 37774088640.

The previous prime is 82021804099. The next prime is 82021804127. The reversal of 82021804124 is 42140812028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82021804127) 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, 1686812 + ... + 1734755.

It is an arithmetic number, because the mean of its divisors is an integer number (6454788032).

Almost surely, 2^82021804124 is an apocalyptic number.

It is an amenable number.

82021804124 is a deficient number, since it is larger than the sum of its proper divisors (72893108644).

82021804124 is a wasteful number, since it uses less digits than its factorization.

82021804124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422045 (or 3422043 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The spelling of 82021804124 in words is "eighty-two billion, twenty-one million, eight hundred four thousand, one hundred twenty-four".