20200118861 has 32 divisors (see below), whose sum is σ = 22593220608. Its totient is φ = 17942031360.

The previous prime is 20200118849. The next prime is 20200118893. The reversal of 20200118861 is 16881100202.

It is a cyclic number.

It is not a de Polignac number, because 20200118861 - 2⁶ = 20200118797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200114861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20383076 + ... + 20384066.

It is an arithmetic number, because the mean of its divisors is an integer number (706038144).

Almost surely, 2^20200118861 is an apocalyptic number.

It is an amenable number.

20200118861 is a deficient number, since it is larger than the sum of its proper divisors (2393101747).

20200118861 is a wasteful number, since it uses less digits than its factorization.

20200118861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581.

The product of its (nonzero) digits is 1536, while the sum is 29.

The spelling of 20200118861 in words is "twenty billion, two hundred million, one hundred eighteen thousand, eight hundred sixty-one".