20430033003401 has 18 divisors (see below), whose sum is σ = 24613308999630. Its totient is φ = 16907613485952.

The previous prime is 20430033003397. The next prime is 20430033003433. The reversal of 20430033003401 is 10430033003402.

It can be written as a sum of positive squares in 3 ways, for example, as 337235718400 + 20092797285001 = 580720^2 + 4482499^2 .

It is not a de Polignac number, because 20430033003401 - 2² = 20430033003397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20430033000401) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 247841936 + ... + 247924353.

It is an arithmetic number, because the mean of its divisors is an integer number (1367406055535).

Almost surely, 2^{20430033003401} is an apocalyptic number.

It is an amenable number.

20430033003401 is a deficient number, since it is larger than the sum of its proper divisors (4183275996229).

20430033003401 is an equidigital number, since it uses as much as digits as its factorization.

20430033003401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495766361 (or 495766325 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20430033003401 its reverse (10430033003402), we get a palindrome (30860066006803).

Subtracting from 20430033003401 its reverse (10430033003402), we obtain a palindrome (9999999999999).

The spelling of 20430033003401 in words is "twenty trillion, four hundred thirty billion, thirty-three million, three thousand, four hundred one".