64354321022881 has 2 divisors, whose sum is σ = 64354321022882. Its totient is φ = 64354321022880.

The previous prime is 64354321022839. The next prime is 64354321022909. The reversal of 64354321022881 is 18822012345346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56433389230656 + 7920931792225 = 7512216^2 + 2814415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64354321022881 is a prime.

It is a super-2 number, since 2×64354321022881² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64354321722881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32177160511440 + 32177160511441.

It is an arithmetic number, because the mean of its divisors is an integer number (32177160511441).

Almost surely, 2^{64354321022881} is an apocalyptic number.

It is an amenable number.

64354321022881 is a deficient number, since it is larger than the sum of its proper divisors (1).

64354321022881 is an equidigital number, since it uses as much as digits as its factorization.

64354321022881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 64354321022881 in words is "sixty-four trillion, three hundred fifty-four billion, three hundred twenty-one million, twenty-two thousand, eight hundred eighty-one".