64663529297 has 2 divisors, whose sum is σ = 64663529298. Its totient is φ = 64663529296.

The previous prime is 64663529267. The next prime is 64663529299. The reversal of 64663529297 is 79292536646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53917304401 + 10746224896 = 232201^2 + 103664^2 .

It is a cyclic number.

It is not a de Polignac number, because 64663529297 - 2⁶ = 64663529233 is a prime.

It is a super-2 number, since 2×64663529297² (a number of 22 digits) contains 22 as substring.

Together with 64663529299, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64663529299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32331764648 + 32331764649.

It is an arithmetic number, because the mean of its divisors is an integer number (32331764649).

Almost surely, 2^64663529297 is an apocalyptic number.

It is an amenable number.

64663529297 is a deficient number, since it is larger than the sum of its proper divisors (1).

64663529297 is an equidigital number, since it uses as much as digits as its factorization.

64663529297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29393280, while the sum is 59.

The spelling of 64663529297 in words is "sixty-four billion, six hundred sixty-three million, five hundred twenty-nine thousand, two hundred ninety-seven".