64327427497 has 2 divisors, whose sum is σ = 64327427498. Its totient is φ = 64327427496.

The previous prime is 64327427473. The next prime is 64327427503. The reversal of 64327427497 is 79472472346.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57302305641 + 7025121856 = 239379^2 + 83816^2 .

It is a cyclic number.

It is not a de Polignac number, because 64327427497 - 2¹⁹ = 64326903209 is a prime.

It is not a weakly prime, because it can be changed into another prime (64327427467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32163713748 + 32163713749.

It is an arithmetic number, because the mean of its divisors is an integer number (32163713749).

Almost surely, 2^64327427497 is an apocalyptic number.

It is an amenable number.

64327427497 is a deficient number, since it is larger than the sum of its proper divisors (1).

64327427497 is an equidigital number, since it uses as much as digits as its factorization.

64327427497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14224896, while the sum is 55.

The spelling of 64327427497 in words is "sixty-four billion, three hundred twenty-seven million, four hundred twenty-seven thousand, four hundred ninety-seven".