82222712540 has 24 divisors (see below), whose sum is σ = 173535381600. Its totient is φ = 32723811648.

The previous prime is 82222712519. The next prime is 82222712587. The reversal of 82222712540 is 4521722228.

It is a self number, because there is not a number n which added to its sum of digits gives 82222712540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10325507 + ... + 10333466.

It is an arithmetic number, because the mean of its divisors is an integer number (7230640900).

Almost surely, 2^82222712540 is an apocalyptic number.

It is an amenable number.

82222712540 is an abundant number, since it is smaller than the sum of its proper divisors (91312669060).

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

82222712540 is a wasteful number, since it uses less digits than its factorization.

82222712540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20659181 (or 20659179 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 35.

The spelling of 82222712540 in words is "eighty-two billion, two hundred twenty-two million, seven hundred twelve thousand, five hundred forty".