64274221189 has 8 divisors (see below), whose sum is σ = 64950603480. Its totient is φ = 63598119936.

The previous prime is 64274221169. The next prime is 64274221199. The reversal of 64274221189 is 98112247246.

64274221189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25379676100 + 38894545089 = 159310^2 + 197217^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64274221189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64274221169) 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, 406467 + ... + 541999.

It is an arithmetic number, because the mean of its divisors is an integer number (8118825435).

Almost surely, 2^64274221189 is an apocalyptic number.

It is an amenable number.

64274221189 is a deficient number, since it is larger than the sum of its proper divisors (676382291).

64274221189 is a wasteful number, since it uses less digits than its factorization.

64274221189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140519.

The product of its digits is 387072, while the sum is 46.

The spelling of 64274221189 in words is "sixty-four billion, two hundred seventy-four million, two hundred twenty-one thousand, one hundred eighty-nine".