664564154214 has 64 divisors (see below), whose sum is σ = 1358836807680. Its totient is φ = 216641692800.

The previous prime is 664564154197. The next prime is 664564154239. The reversal of 664564154214 is 412451465466.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15482947 + ... + 15525809.

It is an arithmetic number, because the mean of its divisors is an integer number (21231825120).

Almost surely, 2^664564154214 is an apocalyptic number.

664564154214 is an abundant number, since it is smaller than the sum of its proper divisors (694272653466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664564154214 is a wasteful number, since it uses less digits than its factorization.

664564154214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43285.

The product of its digits is 2764800, while the sum is 48.

The spelling of 664564154214 in words is "six hundred sixty-four billion, five hundred sixty-four million, one hundred fifty-four thousand, two hundred fourteen".