664580127373 has 16 divisors (see below), whose sum is σ = 706241891376. Its totient is φ = 623204807680.

The previous prime is 664580127329. The next prime is 664580127397. The reversal of 664580127373 is 373721085466.

It can be written as a sum of positive squares in 8 ways, for example, as 494606978089 + 169973149284 = 703283^2 + 412278^2 .

It is a cyclic number.

It is not a de Polignac number, because 664580127373 - 2²⁵ = 664546572941 is a prime.

It is a super-2 number, since 2×664580127373² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 664580127373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664580827373) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 24996315 + ... + 25022887.

It is an arithmetic number, because the mean of its divisors is an integer number (44140118211).

Almost surely, 2^664580127373 is an apocalyptic number.

It is an amenable number.

664580127373 is a deficient number, since it is larger than the sum of its proper divisors (41661764003).

664580127373 is a wasteful number, since it uses less digits than its factorization.

664580127373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31904.

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 664580127373 in words is "six hundred sixty-four billion, five hundred eighty million, one hundred twenty-seven thousand, three hundred seventy-three".