64869910219 has 16 divisors (see below), whose sum is σ = 71133568000. Its totient is φ = 58927577760.

The previous prime is 64869910163. The next prime is 64869910243. The reversal of 64869910219 is 91201996846.

64869910219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 64869910219 - 2⁹ = 64869909707 is a prime.

It is a super-2 number, since 2×64869910219² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64869910219.

It is not an unprimeable number, because it can be changed into a prime (64869910249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441009 + ... + 569410.

It is an arithmetic number, because the mean of its divisors is an integer number (4445848000).

Almost surely, 2^64869910219 is an apocalyptic number.

64869910219 is a deficient number, since it is larger than the sum of its proper divisors (6263657781).

64869910219 is a wasteful number, since it uses less digits than its factorization.

64869910219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010578.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The spelling of 64869910219 in words is "sixty-four billion, eight hundred sixty-nine million, nine hundred ten thousand, two hundred nineteen".