82162783987 has 4 divisors (see below), whose sum is σ = 82373999760. Its totient is φ = 81951568216.

The previous prime is 82162783961. The next prime is 82162784023. The reversal of 82162783987 is 78938726128.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82162783987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82162783187) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 105607303 + ... + 105608080.

It is an arithmetic number, because the mean of its divisors is an integer number (20593499940).

Almost surely, 2^82162783987 is an apocalyptic number.

82162783987 is a deficient number, since it is larger than the sum of its proper divisors (211215773).

82162783987 is a wasteful number, since it uses less digits than its factorization.

82162783987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211215772.

The product of its digits is 16257024, while the sum is 61.

The spelling of 82162783987 in words is "eighty-two billion, one hundred sixty-two million, seven hundred eighty-three thousand, nine hundred eighty-seven".