204022400023 has 4 divisors (see below), whose sum is σ = 219716430808. Its totient is φ = 188328369240.

The previous prime is 204022399993. The next prime is 204022400051. The reversal of 204022400023 is 320004220402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204022400023 is a prime.

It is a super-2 number, since 2×204022400023² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204022400123) 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, 7847015373 + ... + 7847015398.

It is an arithmetic number, because the mean of its divisors is an integer number (54929107702).

Almost surely, 2^204022400023 is an apocalyptic number.

204022400023 is a deficient number, since it is larger than the sum of its proper divisors (15694030785).

204022400023 is a wasteful number, since it uses less digits than its factorization.

204022400023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15694030784.

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 204022400023 its reverse (320004220402), we get a palindrome (524026620425).

The spelling of 204022400023 in words is "two hundred four billion, twenty-two million, four hundred thousand, twenty-three".