185520405106 has 8 divisors (see below), whose sum is σ = 283531185324. Its totient is φ = 91010010000.

The previous prime is 185520405101. The next prime is 185520405143. The reversal of 185520405106 is 601504025581.

185520405106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 172320463225 + 13199941881 = 415115^2 + 114891^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (185520405101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875096145 + ... + 875096356.

Almost surely, 2^185520405106 is an apocalyptic number.

185520405106 is a deficient number, since it is larger than the sum of its proper divisors (98010780218).

185520405106 is a wasteful number, since it uses less digits than its factorization.

185520405106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750192556.

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 185520405106 in words is "one hundred eighty-five billion, five hundred twenty million, four hundred five thousand, one hundred six".