82155669492 has 96 divisors (see below), whose sum is σ = 208298513920. Its totient is φ = 25052405760.

The previous prime is 82155669473. The next prime is 82155669517. The reversal of 82155669492 is 29496655128.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 8154234 + ... + 8164302.

Almost surely, 2^82155669492 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 82155669492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104149256960).

82155669492 is an abundant number, since it is smaller than the sum of its proper divisors (126142844428).

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

82155669492 is a wasteful number, since it uses less digits than its factorization.

82155669492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10553 (or 10551 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 57.

The spelling of 82155669492 in words is "eighty-two billion, one hundred fifty-five million, six hundred sixty-nine thousand, four hundred ninety-two".