20200000023 has 16 divisors (see below), whose sum is σ = 34201058560. Its totient is φ = 11542857048.

The previous prime is 20200000019. The next prime is 20200000091. The reversal of 20200000023 is 32000000202.

It is not a de Polignac number, because 20200000023 - 2² = 20200000019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20199999960 and 20200000014.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 53438965 + ... + 53439342.

It is an arithmetic number, because the mean of its divisors is an integer number (2137566160).

Almost surely, 2^20200000023 is an apocalyptic number.

20200000023 is a deficient number, since it is larger than the sum of its proper divisors (14001058537).

20200000023 is a wasteful number, since it uses less digits than its factorization.

20200000023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106878323 (or 106878317 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

Adding to 20200000023 its reverse (32000000202), we get a palindrome (52200000225).

The spelling of 20200000023 in words is "twenty billion, two hundred million, twenty-three", and thus it is an aban number.