64668251211 has 8 divisors (see below), whose sum is σ = 90762457920. Its totient is φ = 40843105992.

The previous prime is 64668251191. The next prime is 64668251239. The reversal of 64668251211 is 11215286646.

64668251211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64668251211 - 2³⁴ = 47488382027 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (64668250211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567265305 + ... + 567265418.

It is an arithmetic number, because the mean of its divisors is an integer number (11345307240).

Almost surely, 2^64668251211 is an apocalyptic number.

64668251211 is a deficient number, since it is larger than the sum of its proper divisors (26094206709).

64668251211 is a wasteful number, since it uses less digits than its factorization.

64668251211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134530745.

The product of its digits is 138240, while the sum is 42.

The spelling of 64668251211 in words is "sixty-four billion, six hundred sixty-eight million, two hundred fifty-one thousand, two hundred eleven".