872586347481 has 48 divisors (see below), whose sum is σ = 1369368104832. Its totient is φ = 533960697600.

The previous prime is 872586347419. The next prime is 872586347519. The reversal of 872586347481 is 184743685278.

It is a happy number.

872586347481 is a `hidden beast` number, since 8 + 7 + 2 + 5 + 86 + 3 + 474 + 81 = 666.

It is not a de Polignac number, because 872586347481 - 2²³ = 872577958873 is a prime.

It is a super-2 number, since 2×872586347481² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (872586347681) 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 47 ways as a sum of consecutive naturals, for example, 325035 + ... + 1360448.

It is an arithmetic number, because the mean of its divisors is an integer number (28528502184).

Almost surely, 2^872586347481 is an apocalyptic number.

It is an amenable number.

872586347481 is a deficient number, since it is larger than the sum of its proper divisors (496781757351).

872586347481 is a wasteful number, since it uses less digits than its factorization.

872586347481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685614 (or 1685611 counting only the distinct ones).

The product of its digits is 72253440, while the sum is 63.

The spelling of 872586347481 in words is "eight hundred seventy-two billion, five hundred eighty-six million, three hundred forty-seven thousand, four hundred eighty-one".