82861838481 has 16 divisors (see below), whose sum is σ = 117029401344. Its totient is φ = 51970416384.

The previous prime is 82861838471. The next prime is 82861838537. The reversal of 82861838481 is 18483816828.

It is not a de Polignac number, because 82861838481 - 2¹¹ = 82861836433 is a prime.

It is a super-2 number, since 2×82861838481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82861838471) 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 15 ways as a sum of consecutive naturals, for example, 207190 + ... + 456783.

It is an arithmetic number, because the mean of its divisors is an integer number (7314337584).

Almost surely, 2^82861838481 is an apocalyptic number.

It is an amenable number.

82861838481 is a deficient number, since it is larger than the sum of its proper divisors (34167562863).

82861838481 is a wasteful number, since it uses less digits than its factorization.

82861838481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666440.

The product of its digits is 4718592, while the sum is 57.

The spelling of 82861838481 in words is "eighty-two billion, eight hundred sixty-one million, eight hundred thirty-eight thousand, four hundred eighty-one".