20003425412981 has 2 divisors, whose sum is σ = 20003425412982. Its totient is φ = 20003425412980.

The previous prime is 20003425412923. The next prime is 20003425413107. The reversal of 20003425412981 is 18921452430002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11548211806756 + 8455213606225 = 3398266^2 + 2907785^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003425412981 - 2³⁸ = 19728547506037 is a prime.

It is a super-3 number, since 3×20003425412981³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20003425414981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001712706490 + 10001712706491.

It is an arithmetic number, because the mean of its divisors is an integer number (10001712706491).

Almost surely, 2^{20003425412981} is an apocalyptic number.

It is an amenable number.

20003425412981 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003425412981 is an equidigital number, since it uses as much as digits as its factorization.

20003425412981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 41.

Adding to 20003425412981 its reverse (18921452430002), we get a palindrome (38924877842983).

The spelling of 20003425412981 in words is "twenty trillion, three billion, four hundred twenty-five million, four hundred twelve thousand, nine hundred eighty-one".