20112453726517 has 2 divisors, whose sum is σ = 20112453726518. Its totient is φ = 20112453726516.

The previous prime is 20112453726511. The next prime is 20112453726557. The reversal of 20112453726517 is 71562735421102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17839819085841 + 2272634640676 = 4223721^2 + 1507526^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112453726517 - 2¹¹ = 20112453724469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112453726511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056226863258 + 10056226863259.

It is an arithmetic number, because the mean of its divisors is an integer number (10056226863259).

Almost surely, 2^{20112453726517} is an apocalyptic number.

It is an amenable number.

20112453726517 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112453726517 is an equidigital number, since it uses as much as digits as its factorization.

20112453726517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 20112453726517 in words is "twenty trillion, one hundred twelve billion, four hundred fifty-three million, seven hundred twenty-six thousand, five hundred seventeen".