64372650889 has 2 divisors, whose sum is σ = 64372650890. Its totient is φ = 64372650888.

The previous prime is 64372650887. The next prime is 64372650893. The reversal of 64372650889 is 98805627346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44654874489 + 19717776400 = 211317^2 + 140420^2 .

It is a cyclic number.

It is not a de Polignac number, because 64372650889 - 2¹ = 64372650887 is a prime.

Together with 64372650887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64372650887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32186325444 + 32186325445.

It is an arithmetic number, because the mean of its divisors is an integer number (32186325445).

Almost surely, 2^64372650889 is an apocalyptic number.

It is an amenable number.

64372650889 is a deficient number, since it is larger than the sum of its proper divisors (1).

64372650889 is an equidigital number, since it uses as much as digits as its factorization.

64372650889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 64372650889 in words is "sixty-four billion, three hundred seventy-two million, six hundred fifty thousand, eight hundred eighty-nine".