64550372426833 has 2 divisors, whose sum is σ = 64550372426834. Its totient is φ = 64550372426832.

The previous prime is 64550372426753. The next prime is 64550372426879. The reversal of 64550372426833 is 33862427305546.

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., 48222566397009 + 16327806029824 = 6944247^2 + 4040768^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64550372426833 is a prime.

It is not a weakly prime, because it can be changed into another prime (64550372426233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32275186213416 + 32275186213417.

It is an arithmetic number, because the mean of its divisors is an integer number (32275186213417).

Almost surely, 2^{64550372426833} is an apocalyptic number.

It is an amenable number.

64550372426833 is a deficient number, since it is larger than the sum of its proper divisors (1).

64550372426833 is an equidigital number, since it uses as much as digits as its factorization.

64550372426833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87091200, while the sum is 58.

The spelling of 64550372426833 in words is "sixty-four trillion, five hundred fifty billion, three hundred seventy-two million, four hundred twenty-six thousand, eight hundred thirty-three".