82138238504 has 64 divisors (see below), whose sum is σ = 181705056000. Its totient is φ = 34073063424.

The previous prime is 82138238491. The next prime is 82138238519. The reversal of 82138238504 is 40583283128.

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 15 ways as a sum of consecutive naturals, for example, 297197 + ... + 502595.

It is an arithmetic number, because the mean of its divisors is an integer number (2839141500).

Almost surely, 2^82138238504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82138238504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90852528000).

82138238504 is an abundant number, since it is smaller than the sum of its proper divisors (99566817496).

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

82138238504 is a wasteful number, since it uses less digits than its factorization.

82138238504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205642 (or 205638 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 82138238504 in words is "eighty-two billion, one hundred thirty-eight million, two hundred thirty-eight thousand, five hundred four".