20113444401 has 16 divisors (see below), whose sum is σ = 26890528896. Its totient is φ = 13372701696.

The previous prime is 20113444399. The next prime is 20113444411. The reversal of 20113444401 is 10444431102.

It is not a de Polignac number, because 20113444401 - 2¹ = 20113444399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20113444411) 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, 2550801 + ... + 2558673.

It is an arithmetic number, because the mean of its divisors is an integer number (1680658056).

Almost surely, 2^20113444401 is an apocalyptic number.

It is an amenable number.

20113444401 is a deficient number, since it is larger than the sum of its proper divisors (6777084495).

20113444401 is a wasteful number, since it uses less digits than its factorization.

20113444401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10072.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 20113444401 its reverse (10444431102), we get a palindrome (30557875503).

The spelling of 20113444401 in words is "twenty billion, one hundred thirteen million, four hundred forty-four thousand, four hundred one".