53521166631407 has 2 divisors, whose sum is σ = 53521166631408. Its totient is φ = 53521166631406.

The previous prime is 53521166631349. The next prime is 53521166631433. The reversal of 53521166631407 is 70413666112535.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53521166631407 - 2¹⁸ = 53521166369263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53521166631707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26760583315703 + 26760583315704.

It is an arithmetic number, because the mean of its divisors is an integer number (26760583315704).

Almost surely, 2^{53521166631407} is an apocalyptic number.

53521166631407 is a deficient number, since it is larger than the sum of its proper divisors (1).

53521166631407 is an equidigital number, since it uses as much as digits as its factorization.

53521166631407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 53521166631407 in words is "fifty-three trillion, five hundred twenty-one billion, one hundred sixty-six million, six hundred thirty-one thousand, four hundred seven".