64812240553 has 2 divisors, whose sum is σ = 64812240554. Its totient is φ = 64812240552.

The previous prime is 64812240541. The next prime is 64812240601. The reversal of 64812240553 is 35504221846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64164436249 + 647804304 = 253307^2 + 25452^2 .

It is a cyclic number.

It is not a de Polignac number, because 64812240553 - 2¹³ = 64812232361 is a prime.

It is not a weakly prime, because it can be changed into another prime (64812240533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32406120276 + 32406120277.

It is an arithmetic number, because the mean of its divisors is an integer number (32406120277).

Almost surely, 2^64812240553 is an apocalyptic number.

It is an amenable number.

64812240553 is a deficient number, since it is larger than the sum of its proper divisors (1).

64812240553 is an equidigital number, since it uses as much as digits as its factorization.

64812240553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 64812240553 in words is "sixty-four billion, eight hundred twelve million, two hundred forty thousand, five hundred fifty-three".