20293775124481 has 2 divisors, whose sum is σ = 20293775124482. Its totient is φ = 20293775124480.

The previous prime is 20293775124443. The next prime is 20293775124503. The reversal of 20293775124481 is 18442157739202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18678819610000 + 1614955514481 = 4321900^2 + 1270809^2 .

It is a cyclic number.

It is not a de Polignac number, because 20293775124481 - 2¹¹ = 20293775122433 is a prime.

It is a super-2 number, since 2×20293775124481² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20293775124281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10146887562240 + 10146887562241.

It is an arithmetic number, because the mean of its divisors is an integer number (10146887562241).

Almost surely, 2^{20293775124481} is an apocalyptic number.

It is an amenable number.

20293775124481 is a deficient number, since it is larger than the sum of its proper divisors (1).

20293775124481 is an equidigital number, since it uses as much as digits as its factorization.

20293775124481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 20293775124481 in words is "twenty trillion, two hundred ninety-three billion, seven hundred seventy-five million, one hundred twenty-four thousand, four hundred eighty-one".