64550033145839 has 2 divisors, whose sum is σ = 64550033145840. Its totient is φ = 64550033145838.

The previous prime is 64550033145821. The next prime is 64550033145889. The reversal of 64550033145839 is 93854133005546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64550033145839 - 2¹⁶ = 64550033080303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64550033145889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32275016572919 + 32275016572920.

It is an arithmetic number, because the mean of its divisors is an integer number (32275016572920).

Almost surely, 2^{64550033145839} is an apocalyptic number.

64550033145839 is a deficient number, since it is larger than the sum of its proper divisors (1).

64550033145839 is an equidigital number, since it uses as much as digits as its factorization.

64550033145839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328000, while the sum is 56.

The spelling of 64550033145839 in words is "sixty-four trillion, five hundred fifty billion, thirty-three million, one hundred forty-five thousand, eight hundred thirty-nine".