20101667205 has 16 divisors (see below), whose sum is σ = 32167756224. Its totient is φ = 10719192960.

The previous prime is 20101667191. The next prime is 20101667207. The reversal of 20101667205 is 50276610102.

It is not a de Polignac number, because 20101667205 - 2⁴ = 20101667189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101667207) 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, 4939 + ... + 200568.

It is an arithmetic number, because the mean of its divisors is an integer number (2010484764).

Almost surely, 2^20101667205 is an apocalyptic number.

It is an amenable number.

20101667205 is a deficient number, since it is larger than the sum of its proper divisors (12066089019).

20101667205 is a wasteful number, since it uses less digits than its factorization.

20101667205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212036.

The product of its (nonzero) digits is 5040, while the sum is 30.

The spelling of 20101667205 in words is "twenty billion, one hundred one million, six hundred sixty-seven thousand, two hundred five".