20452106182985 has 16 divisors (see below), whose sum is σ = 24590027053200. Its totient is φ = 16330029981696.

The previous prime is 20452106182931. The next prime is 20452106182993. The reversal of 20452106182985 is 58928160125402.

It can be written as a sum of positive squares in 8 ways, for example, as 677044271929 + 19775061911056 = 822827^2 + 4446916^2 .

It is a cyclic number.

It is not a de Polignac number, because 20452106182985 - 2¹⁰ = 20452106181961 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 13622231 + ... + 15048899.

It is an arithmetic number, because the mean of its divisors is an integer number (1536876690825).

Almost surely, 2^{20452106182985} is an apocalyptic number.

It is an amenable number.

20452106182985 is a deficient number, since it is larger than the sum of its proper divisors (4137920870215).

20452106182985 is a wasteful number, since it uses less digits than its factorization.

20452106182985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432220.

The product of its (nonzero) digits is 2764800, while the sum is 53.

The spelling of 20452106182985 in words is "twenty trillion, four hundred fifty-two billion, one hundred six million, one hundred eighty-two thousand, nine hundred eighty-five".