64408348933 has 2 divisors, whose sum is σ = 64408348934. Its totient is φ = 64408348932.

The previous prime is 64408348891. The next prime is 64408348973. The reversal of 64408348933 is 33984380446.

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., 35386500769 + 29021848164 = 188113^2 + 170358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64408348933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64408348973) 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, 32204174466 + 32204174467.

It is an arithmetic number, because the mean of its divisors is an integer number (32204174467).

Almost surely, 2^64408348933 is an apocalyptic number.

It is an amenable number.

64408348933 is a deficient number, since it is larger than the sum of its proper divisors (1).

64408348933 is an equidigital number, since it uses as much as digits as its factorization.

64408348933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5971968, while the sum is 52.

The spelling of 64408348933 in words is "sixty-four billion, four hundred eight million, three hundred forty-eight thousand, nine hundred thirty-three".