64642024673 has 2 divisors, whose sum is σ = 64642024674. Its totient is φ = 64642024672.

The previous prime is 64642024619. The next prime is 64642024691. The reversal of 64642024673 is 37642024646.

64642024673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36809108449 + 27832916224 = 191857^2 + 166832^2 .

It is a cyclic number.

It is not a de Polignac number, because 64642024673 - 2¹² = 64642020577 is a prime.

It is not a weakly prime, because it can be changed into another prime (64642020673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32321012336 + 32321012337.

It is an arithmetic number, because the mean of its divisors is an integer number (32321012337).

Almost surely, 2^64642024673 is an apocalyptic number.

It is an amenable number.

64642024673 is a deficient number, since it is larger than the sum of its proper divisors (1).

64642024673 is an equidigital number, since it uses as much as digits as its factorization.

64642024673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 44.

The spelling of 64642024673 in words is "sixty-four billion, six hundred forty-two million, twenty-four thousand, six hundred seventy-three".