63728126533 has 2 divisors, whose sum is σ = 63728126534. Its totient is φ = 63728126532.

The previous prime is 63728126519. The next prime is 63728126543. The reversal of 63728126533 is 33562182736.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60296275809 + 3431850724 = 245553^2 + 58582^2 .

It is a cyclic number.

It is not a de Polignac number, because 63728126533 - 2²⁵ = 63694572101 is a prime.

It is a super-2 number, since 2×63728126533² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63728126513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31864063266 + 31864063267.

It is an arithmetic number, because the mean of its divisors is an integer number (31864063267).

Almost surely, 2^63728126533 is an apocalyptic number.

It is an amenable number.

63728126533 is a deficient number, since it is larger than the sum of its proper divisors (1).

63728126533 is an equidigital number, since it uses as much as digits as its factorization.

63728126533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 46.

The spelling of 63728126533 in words is "sixty-three billion, seven hundred twenty-eight million, one hundred twenty-six thousand, five hundred thirty-three".