20200423055 has 16 divisors (see below), whose sum is σ = 24483237600. Its totient is φ = 15999265152.

The previous prime is 20200423051. The next prime is 20200423069. The reversal of 20200423055 is 55032400202.

It is a cyclic number.

It is not a de Polignac number, because 20200423055 - 2² = 20200423051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20200423055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200423051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170996 + ... + 263894.

It is an arithmetic number, because the mean of its divisors is an integer number (1530202350).

Almost surely, 2^20200423055 is an apocalyptic number.

20200423055 is a deficient number, since it is larger than the sum of its proper divisors (4282814545).

20200423055 is a wasteful number, since it uses less digits than its factorization.

20200423055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93338.

The product of its (nonzero) digits is 2400, while the sum is 23.

Adding to 20200423055 its reverse (55032400202), we get a palindrome (75232823257).

The spelling of 20200423055 in words is "twenty billion, two hundred million, four hundred twenty-three thousand, fifty-five".