20013730766527 has 2 divisors, whose sum is σ = 20013730766528. Its totient is φ = 20013730766526.

The previous prime is 20013730766483. The next prime is 20013730766551. The reversal of 20013730766527 is 72566703731002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20013730766527 - 2²³ = 20013722377919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20013730766027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006865383263 + 10006865383264.

It is an arithmetic number, because the mean of its divisors is an integer number (10006865383264).

Almost surely, 2^{20013730766527} is an apocalyptic number.

20013730766527 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013730766527 is an equidigital number, since it uses as much as digits as its factorization.

20013730766527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2222640, while the sum is 49.

The spelling of 20013730766527 in words is "twenty trillion, thirteen billion, seven hundred thirty million, seven hundred sixty-six thousand, five hundred twenty-seven".