82155830481 has 12 divisors (see below), whose sum is σ = 119603940352. Its totient is φ = 54339288696.

The previous prime is 82155830461. The next prime is 82155830507. The reversal of 82155830481 is 18403855128.

82155830481 is a `hidden beast` number, since 8 + 21 + 5 + 583 + 0 + 48 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-82155830481 is a prime.

It is a super-2 number, since 2×82155830481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82155830441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35937541 + ... + 35939826.

Almost surely, 2^82155830481 is an apocalyptic number.

It is an amenable number.

82155830481 is a deficient number, since it is larger than the sum of its proper divisors (37448109871).

82155830481 is a wasteful number, since it uses less digits than its factorization.

82155830481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71877500 (or 71877497 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 45.

The spelling of 82155830481 in words is "eighty-two billion, one hundred fifty-five million, eight hundred thirty thousand, four hundred eighty-one".