20200100109 has 12 divisors (see below), whose sum is σ = 31330767744. Its totient is φ = 11542914264.

The previous prime is 20200100101. The next prime is 20200100143. The reversal of 20200100109 is 90100100202.

It is a happy number.

It is not a de Polignac number, because 20200100109 - 2³ = 20200100101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200100101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68707677 + ... + 68707970.

It is an arithmetic number, because the mean of its divisors is an integer number (2610897312).

Almost surely, 2^20200100109 is an apocalyptic number.

It is an amenable number.

20200100109 is a deficient number, since it is larger than the sum of its proper divisors (11130667635).

20200100109 is a wasteful number, since it uses less digits than its factorization.

20200100109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137415664 (or 137415657 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The spelling of 20200100109 in words is "twenty billion, two hundred million, one hundred thousand, one hundred nine".