64770647629 has 2 divisors, whose sum is σ = 64770647630. Its totient is φ = 64770647628.

The previous prime is 64770647609. The next prime is 64770647657. The reversal of 64770647629 is 92674607746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58779578025 + 5991069604 = 242445^2 + 77402^2 .

It is a cyclic number.

It is not a de Polignac number, because 64770647629 - 2⁵ = 64770647597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64770647609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32385323814 + 32385323815.

It is an arithmetic number, because the mean of its divisors is an integer number (32385323815).

Almost surely, 2^64770647629 is an apocalyptic number.

It is an amenable number.

64770647629 is a deficient number, since it is larger than the sum of its proper divisors (1).

64770647629 is an equidigital number, since it uses as much as digits as its factorization.

64770647629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21337344, while the sum is 58.

The spelling of 64770647629 in words is "sixty-four billion, seven hundred seventy million, six hundred forty-seven thousand, six hundred twenty-nine".