82067721192085 has 16 divisors (see below), whose sum is σ = 101144973902976. Its totient is φ = 63878443328448.

The previous prime is 82067721192059. The next prime is 82067721192089. The reversal of 82067721192085 is 58029112776028.

It is a cyclic number.

It is not a de Polignac number, because 82067721192085 - 2¹³ = 82067721183893 is a prime.

It is a super-2 number, since 2×82067721192085² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82067721192089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4689544 + ... + 13642846.

It is an arithmetic number, because the mean of its divisors is an integer number (6321560868936).

Almost surely, 2^{82067721192085} is an apocalyptic number.

It is an amenable number.

82067721192085 is a deficient number, since it is larger than the sum of its proper divisors (19077252710891).

82067721192085 is a wasteful number, since it uses less digits than its factorization.

82067721192085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9002892.

The product of its (nonzero) digits is 6773760, while the sum is 58.

The spelling of 82067721192085 in words is "eighty-two trillion, sixty-seven billion, seven hundred twenty-one million, one hundred ninety-two thousand, eighty-five".