5185406505 has 16 divisors (see below), whose sum is σ = 8298543744. Its totient is φ = 2764919040.

The previous prime is 5185406497. The next prime is 5185406579. The reversal of 5185406505 is 5056045815.

It is not a de Polignac number, because 5185406505 - 2³ = 5185406497 is a prime.

It is a super-3 number, since 3×5185406505³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32740 + ... + 106970.

It is an arithmetic number, because the mean of its divisors is an integer number (518658984).

Almost surely, 2^5185406505 is an apocalyptic number.

It is an amenable number.

5185406505 is a deficient number, since it is larger than the sum of its proper divisors (3113137239).

5185406505 is a wasteful number, since it uses less digits than its factorization.

5185406505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78896.

The product of its (nonzero) digits is 120000, while the sum is 39.

The square root of 5185406505 is about 72009.7667334092. The cubic root of 5185406505 is about 1730.8559926869.

The spelling of 5185406505 in words is "five billion, one hundred eighty-five million, four hundred six thousand, five hundred five".