82005523387 has 4 divisors (see below), whose sum is σ = 82026495216. Its totient is φ = 81984551560.

The previous prime is 82005523367. The next prime is 82005523393. The reversal of 82005523387 is 78332550028.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82005523387 - 2³¹ = 79858039739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82005523337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10480048 + ... + 10487869.

It is an arithmetic number, because the mean of its divisors is an integer number (20506623804).

Almost surely, 2^82005523387 is an apocalyptic number.

82005523387 is a deficient number, since it is larger than the sum of its proper divisors (20971829).

82005523387 is a wasteful number, since it uses less digits than its factorization.

82005523387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20971828.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 82005523387 in words is "eighty-two billion, five million, five hundred twenty-three thousand, three hundred eighty-seven".