184557421845 has 24 divisors (see below), whose sum is σ = 320330140416. Its totient is φ = 98298129888.

The previous prime is 184557421781. The next prime is 184557421849. The reversal of 184557421845 is 548124755481.

184557421845 is a `hidden beast` number, since 1 + 8 + 4 + 5 + 574 + 21 + 8 + 45 = 666.

It is not a de Polignac number, because 184557421845 - 2⁶ = 184557421781 is a prime.

It is a super-2 number, since 2×184557421845² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 184557421791 and 184557421800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (184557421849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2726509 + ... + 2793378.

It is an arithmetic number, because the mean of its divisors is an integer number (13347089184).

Almost surely, 2^184557421845 is an apocalyptic number.

184557421845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

184557421845 is a deficient number, since it is larger than the sum of its proper divisors (135772718571).

184557421845 is a wasteful number, since it uses less digits than its factorization.

184557421845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520641 (or 5520638 counting only the distinct ones).

The product of its digits is 7168000, while the sum is 54.

The spelling of 184557421845 in words is "one hundred eighty-four billion, five hundred fifty-seven million, four hundred twenty-one thousand, eight hundred forty-five".