185506516045 has 4 divisors (see below), whose sum is σ = 222607819260. Its totient is φ = 148405212832.

The previous prime is 185506516007. The next prime is 185506516073. The reversal of 185506516045 is 540615605581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26386103844 + 159120412201 = 162438^2 + 398899^2 .

It is a cyclic number.

It is not a de Polignac number, because 185506516045 - 2²⁷ = 185372298317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 185506515986 and 185506516004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18550651600 + ... + 18550651609.

It is an arithmetic number, because the mean of its divisors is an integer number (55651954815).

Almost surely, 2^185506516045 is an apocalyptic number.

It is an amenable number.

185506516045 is a deficient number, since it is larger than the sum of its proper divisors (37101303215).

185506516045 is an equidigital number, since it uses as much as digits as its factorization.

185506516045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37101303214.

The product of its (nonzero) digits is 720000, while the sum is 46.

The spelling of 185506516045 in words is "one hundred eighty-five billion, five hundred six million, five hundred sixteen thousand, forty-five".