64321065929 has 2 divisors, whose sum is σ = 64321065930. Its totient is φ = 64321065928.

The previous prime is 64321065917. The next prime is 64321065943. The reversal of 64321065929 is 92956012346.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46032560704 + 18288505225 = 214552^2 + 135235^2 .

It is a cyclic number.

It is not a de Polignac number, because 64321065929 - 2³² = 60026098633 is a prime.

It is not a weakly prime, because it can be changed into another prime (64321665929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32160532964 + 32160532965.

It is an arithmetic number, because the mean of its divisors is an integer number (32160532965).

Almost surely, 2^64321065929 is an apocalyptic number.

It is an amenable number.

64321065929 is a deficient number, since it is larger than the sum of its proper divisors (1).

64321065929 is an equidigital number, since it uses as much as digits as its factorization.

64321065929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 64321065929 in words is "sixty-four billion, three hundred twenty-one million, sixty-five thousand, nine hundred twenty-nine".