20200000043 has 4 divisors (see below), whose sum is σ = 21263157960. Its totient is φ = 19136842128.

The previous prime is 20200000019. The next prime is 20200000091. The reversal of 20200000043 is 34000000202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20200000043 - 2²⁶ = 20132891179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20200000013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531578930 + ... + 531578967.

It is an arithmetic number, because the mean of its divisors is an integer number (5315789490).

Almost surely, 2^20200000043 is an apocalyptic number.

20200000043 is a deficient number, since it is larger than the sum of its proper divisors (1063157917).

20200000043 is a wasteful number, since it uses less digits than its factorization.

20200000043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063157916.

The product of its (nonzero) digits is 48, while the sum is 11.

Adding to 20200000043 its reverse (34000000202), we get a palindrome (54200000245).

The spelling of 20200000043 in words is "twenty billion, two hundred million, forty-three", and thus it is an aban number.