20855160885 has 32 divisors (see below), whose sum is σ = 35943143040. Its totient is φ = 10264843008.

The previous prime is 20855160883. The next prime is 20855160913. The reversal of 20855160885 is 58806155802.

It is not a de Polignac number, because 20855160885 - 2¹ = 20855160883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20855160881) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1134951 + ... + 1153179.

It is an arithmetic number, because the mean of its divisors is an integer number (1123223220).

Almost surely, 2^20855160885 is an apocalyptic number.

It is an amenable number.

20855160885 is a deficient number, since it is larger than the sum of its proper divisors (15087982155).

20855160885 is a wasteful number, since it uses less digits than its factorization.

20855160885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24117.

The product of its (nonzero) digits is 768000, while the sum is 48.

The spelling of 20855160885 in words is "twenty billion, eight hundred fifty-five million, one hundred sixty thousand, eight hundred eighty-five".