66560700557919 has 8 divisors (see below), whose sum is σ = 88795033996032. Its totient is φ = 44350083745880.

The previous prime is 66560700557899. The next prime is 66560700557921. The reversal of 66560700557919 is 91975500706566.

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

It is a cyclic number.

It is not a de Polignac number, because 66560700557919 - 2²⁸ = 66560432122463 is a prime.

It is a super-2 number, since 2×66560700557919² (a number of 28 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 66560700557919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66560700557969) 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, 5929149969 + ... + 5929161194.

It is an arithmetic number, because the mean of its divisors is an integer number (11099379249504).

Almost surely, 2^{66560700557919} is an apocalyptic number.

66560700557919 is a deficient number, since it is larger than the sum of its proper divisors (22234333438113).

66560700557919 is a wasteful number, since it uses less digits than its factorization.

66560700557919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11858313037.

The product of its (nonzero) digits is 107163000, while the sum is 66.

The spelling of 66560700557919 in words is "sixty-six trillion, five hundred sixty billion, seven hundred million, five hundred fifty-seven thousand, nine hundred nineteen".