64716443527 has 2 divisors, whose sum is σ = 64716443528. Its totient is φ = 64716443526.

The previous prime is 64716443509. The next prime is 64716443551. The reversal of 64716443527 is 72534461746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64716443527 - 2¹⁹ = 64715919239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64716443027) 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, 32358221763 + 32358221764.

It is an arithmetic number, because the mean of its divisors is an integer number (32358221764).

Almost surely, 2^64716443527 is an apocalyptic number.

64716443527 is a deficient number, since it is larger than the sum of its proper divisors (1).

64716443527 is an equidigital number, since it uses as much as digits as its factorization.

64716443527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3386880, while the sum is 49.

The spelling of 64716443527 in words is "sixty-four billion, seven hundred sixteen million, four hundred forty-three thousand, five hundred twenty-seven".