20011040431400 has 24 divisors (see below), whose sum is σ = 46525669003470. Its totient is φ = 8004416172480.

The previous prime is 20011040431397. The next prime is 20011040431457. The reversal of 20011040431400 is 413404011002.

It can be written as a sum of positive squares in 3 ways, for example, as 12944726102884 + 7066314328516 = 3597878^2 + 2658254^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50027600879 + ... + 50027601278.

Almost surely, 2^{20011040431400} is an apocalyptic number.

20011040431400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011040431400 is an abundant number, since it is smaller than the sum of its proper divisors (26514628572070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20011040431400 is a wasteful number, since it uses less digits than its factorization.

20011040431400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100055202173 (or 100055202164 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20011040431400 its reverse (413404011002), we get a palindrome (20424444442402).

The spelling of 20011040431400 in words is "twenty trillion, eleven billion, forty million, four hundred thirty-one thousand, four hundred".