20000400101 has 16 divisors (see below), whose sum is σ = 22632618240. Its totient is φ = 17507273280.

The previous prime is 20000400097. The next prime is 20000400127. The reversal of 20000400101 is 10100400002.

It is a cyclic number.

It is not a de Polignac number, because 20000400101 - 2² = 20000400097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000400151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31655 + ... + 202491.

It is an arithmetic number, because the mean of its divisors is an integer number (1414538640).

Almost surely, 2^20000400101 is an apocalyptic number.

It is an amenable number.

20000400101 is a deficient number, since it is larger than the sum of its proper divisors (2632218139).

20000400101 is a wasteful number, since it uses less digits than its factorization.

20000400101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171244.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 20000400101 its reverse (10100400002), we get a palindrome (30100800103).

Subtracting from 20000400101 its reverse (10100400002), we obtain a palindrome (9900000099).

The spelling of 20000400101 in words is "twenty billion, four hundred thousand, one hundred one".