82574897481 has 12 divisors (see below), whose sum is σ = 119410249140. Its totient is φ = 54987440640.

The previous prime is 82574897473. The next prime is 82574897497. The reversal of 82574897481 is 18479847528.

82574897481 is a `hidden beast` number, since 8 + 2 + 5 + 7 + 489 + 74 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 43166295225 + 39408602256 = 207765^2 + 198516^2 .

It is not a de Polignac number, because 82574897481 - 2³ = 82574897473 is a prime.

It is a super-2 number, since 2×82574897481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82574897401) 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, 5199216 + ... + 5215073.

It is an arithmetic number, because the mean of its divisors is an integer number (9950854095).

Almost surely, 2^82574897481 is an apocalyptic number.

It is an amenable number.

82574897481 is a deficient number, since it is larger than the sum of its proper divisors (36835351659).

82574897481 is a wasteful number, since it uses less digits than its factorization.

82574897481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10415176 (or 10415173 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 63.

The spelling of 82574897481 in words is "eighty-two billion, five hundred seventy-four million, eight hundred ninety-seven thousand, four hundred eighty-one".