63728126543 has 2 divisors, whose sum is σ = 63728126544. Its totient is φ = 63728126542.

The previous prime is 63728126533. The next prime is 63728126587. The reversal of 63728126543 is 34562182736.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63728126543 is a prime.

It is a super-2 number, since 2×63728126543² (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 polite number, since it can be written as a sum of consecutive naturals, namely, 31864063271 + 31864063272.

It is an arithmetic number, because the mean of its divisors is an integer number (31864063272).

Almost surely, 2^63728126543 is an apocalyptic number.

63728126543 is a deficient number, since it is larger than the sum of its proper divisors (1).

63728126543 is an equidigital number, since it uses as much as digits as its factorization.

63728126543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 47.

The spelling of 63728126543 in words is "sixty-three billion, seven hundred twenty-eight million, one hundred twenty-six thousand, five hundred forty-three".