181847066845 has 24 divisors (see below), whose sum is σ = 244008266400. Its totient is φ = 129713801472.

The previous prime is 181847066827. The next prime is 181847066873. The reversal of 181847066845 is 548660748181.

It is not a de Polignac number, because 181847066845 - 2¹⁷ = 181846935773 is a prime.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 181847066845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3284275 + ... + 3339184.

It is an arithmetic number, because the mean of its divisors is an integer number (10167011100).

Almost surely, 2^181847066845 is an apocalyptic number.

It is an amenable number.

181847066845 is a deficient number, since it is larger than the sum of its proper divisors (62161199555).

181847066845 is a wasteful number, since it uses less digits than its factorization.

181847066845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6623517 (or 6623500 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 58.

The spelling of 181847066845 in words is "one hundred eighty-one billion, eight hundred forty-seven million, sixty-six thousand, eight hundred forty-five".