81845094024 has 48 divisors (see below), whose sum is σ = 221727121200. Its totient is φ = 27273904224.

The previous prime is 81845093977. The next prime is 81845094043. The reversal of 81845094024 is 42049054818.

81845094024 is a `hidden beast` number, since 8 + 1 + 84 + 509 + 40 + 24 = 666.

It is a super-3 number, since 3×81845094024³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94207 + ... + 415409.

It is an arithmetic number, because the mean of its divisors is an integer number (4619315025).

Almost surely, 2^81845094024 is an apocalyptic number.

It is an amenable number.

81845094024 is an abundant number, since it is smaller than the sum of its proper divisors (139882027176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81845094024 is a wasteful number, since it uses less digits than its factorization.

81845094024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324754 (or 324747 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 81845094024 in words is "eighty-one billion, eight hundred forty-five million, ninety-four thousand, twenty-four".