20016647085 has 32 divisors (see below), whose sum is σ = 32498114688. Its totient is φ = 10518681600.

The previous prime is 20016647051. The next prime is 20016647129. The reversal of 20016647085 is 58074661002.

It is not a de Polignac number, because 20016647085 - 2²⁰ = 20015598509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1142149 + ... + 1159541.

It is an arithmetic number, because the mean of its divisors is an integer number (1015566084).

Almost surely, 2^20016647085 is an apocalyptic number.

It is an amenable number.

20016647085 is a deficient number, since it is larger than the sum of its proper divisors (12481467603).

20016647085 is a wasteful number, since it uses less digits than its factorization.

20016647085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18525.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 20016647085 in words is "twenty billion, sixteen million, six hundred forty-seven thousand, eighty-five".