81082846537 has 32 divisors (see below), whose sum is σ = 103784592384. Its totient is φ = 61515729600.

The previous prime is 81082846529. The next prime is 81082846543. The reversal of 81082846537 is 73564828018.

It is a cyclic number.

It is not a de Polignac number, because 81082846537 - 2³ = 81082846529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81082846517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 458778 + ... + 610444.

It is an arithmetic number, because the mean of its divisors is an integer number (3243268512).

Almost surely, 2^81082846537 is an apocalyptic number.

It is an amenable number.

81082846537 is a deficient number, since it is larger than the sum of its proper divisors (22701745847).

81082846537 is a wasteful number, since it uses less digits than its factorization.

81082846537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151869.

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 81082846537 in words is "eighty-one billion, eighty-two million, eight hundred forty-six thousand, five hundred thirty-seven".