53521166664127 has 2 divisors, whose sum is σ = 53521166664128. Its totient is φ = 53521166664126.

The previous prime is 53521166664109. The next prime is 53521166664197. The reversal of 53521166664127 is 72146666112535.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53521166664127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53521166664197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26760583332063 + 26760583332064.

It is an arithmetic number, because the mean of its divisors is an integer number (26760583332064).

Almost surely, 2^{53521166664127} is an apocalyptic number.

53521166664127 is a deficient number, since it is larger than the sum of its proper divisors (1).

53521166664127 is an equidigital number, since it uses as much as digits as its factorization.

53521166664127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10886400, while the sum is 55.

The spelling of 53521166664127 in words is "fifty-three trillion, five hundred twenty-one billion, one hundred sixty-six million, six hundred sixty-four thousand, one hundred twenty-seven".