64441652797 has 2 divisors, whose sum is σ = 64441652798. Its totient is φ = 64441652796.

The previous prime is 64441652711. The next prime is 64441652801. The reversal of 64441652797 is 79725614446.

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., 57183635161 + 7258017636 = 239131^2 + 85194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64441652797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64441692797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32220826398 + 32220826399.

It is an arithmetic number, because the mean of its divisors is an integer number (32220826399).

Almost surely, 2^64441652797 is an apocalyptic number.

It is an amenable number.

64441652797 is a deficient number, since it is larger than the sum of its proper divisors (1).

64441652797 is an equidigital number, since it uses as much as digits as its factorization.

64441652797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 55.

The spelling of 64441652797 in words is "sixty-four billion, four hundred forty-one million, six hundred fifty-two thousand, seven hundred ninety-seven".