20004022553 has 16 divisors (see below), whose sum is σ = 22154311296. Its totient is φ = 17965812480.

The previous prime is 20004022541. The next prime is 20004022573. The reversal of 20004022553 is 35522040002.

It is a cyclic number.

It is not a de Polignac number, because 20004022553 - 2¹² = 20004018457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20004022513) 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, 103850 + ... + 225372.

It is an arithmetic number, because the mean of its divisors is an integer number (1384644456).

Almost surely, 2^20004022553 is an apocalyptic number.

20004022553 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20004022553 is a deficient number, since it is larger than the sum of its proper divisors (2150288743).

20004022553 is a wasteful number, since it uses less digits than its factorization.

20004022553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121984.

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

Adding to 20004022553 its reverse (35522040002), we get a palindrome (55526062555).

The spelling of 20004022553 in words is "twenty billion, four million, twenty-two thousand, five hundred fifty-three".