20160885647 has 16 divisors (see below), whose sum is σ = 23399642112. Its totient is φ = 17012112480.

The previous prime is 20160885643. The next prime is 20160885691. The reversal of 20160885647 is 74658806102.

It is a cyclic number.

It is not a de Polignac number, because 20160885647 - 2² = 20160885643 is a prime.

It is a super-2 number, since 2×20160885647² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20160885643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 781322 + ... + 806712.

It is an arithmetic number, because the mean of its divisors is an integer number (1462477632).

Almost surely, 2^20160885647 is an apocalyptic number.

20160885647 is a deficient number, since it is larger than the sum of its proper divisors (3238756465).

20160885647 is a wasteful number, since it uses less digits than its factorization.

20160885647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27158.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 20160885647 in words is "twenty billion, one hundred sixty million, eight hundred eighty-five thousand, six hundred forty-seven".