64433564634949 has 2 divisors, whose sum is σ = 64433564634950. Its totient is φ = 64433564634948.

The previous prime is 64433564634911. The next prime is 64433564634983. The reversal of 64433564634949 is 94943646533446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63769328224900 + 664236410049 = 7985570^2 + 815007^2 .

It is a cyclic number.

It is not a de Polignac number, because 64433564634949 - 2⁹ = 64433564634437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64433564634149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32216782317474 + 32216782317475.

It is an arithmetic number, because the mean of its divisors is an integer number (32216782317475).

Almost surely, 2^{64433564634949} is an apocalyptic number.

It is an amenable number.

64433564634949 is a deficient number, since it is larger than the sum of its proper divisors (1).

64433564634949 is an equidigital number, since it uses as much as digits as its factorization.

64433564634949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2418647040, while the sum is 70.

The spelling of 64433564634949 in words is "sixty-four trillion, four hundred thirty-three billion, five hundred sixty-four million, six hundred thirty-four thousand, nine hundred forty-nine".