82220139436 has 6 divisors (see below), whose sum is σ = 143885244020. Its totient is φ = 41110069716.

The previous prime is 82220139401. The next prime is 82220139439. The reversal of 82220139436 is 63493102228.

It is not an unprimeable number, because it can be changed into a prime (82220139439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10277517426 + ... + 10277517433.

Almost surely, 2^82220139436 is an apocalyptic number.

It is an amenable number.

82220139436 is a deficient number, since it is larger than the sum of its proper divisors (61665104584).

82220139436 is a wasteful number, since it uses less digits than its factorization.

82220139436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20555034863 (or 20555034861 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 82220139436 in words is "eighty-two billion, two hundred twenty million, one hundred thirty-nine thousand, four hundred thirty-six".