66560700558001 has 32 divisors (see below), whose sum is σ = 73598192525312. Its totient is φ = 59818212495360.

The previous prime is 66560700557977. The next prime is 66560700558041. The reversal of 66560700558001 is 10085500706566.

It is a cyclic number.

It is not a de Polignac number, because 66560700558001 - 2⁵ = 66560700557969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66560700558041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172394896 + ... + 172780558.

It is an arithmetic number, because the mean of its divisors is an integer number (2299943516416).

Almost surely, 2^{66560700558001} is an apocalyptic number.

66560700558001 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

66560700558001 is a deficient number, since it is larger than the sum of its proper divisors (7037491967311).

66560700558001 is a wasteful number, since it uses less digits than its factorization.

66560700558001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387953.

The product of its (nonzero) digits is 1512000, while the sum is 49.

The spelling of 66560700558001 in words is "sixty-six trillion, five hundred sixty billion, seven hundred million, five hundred fifty-eight thousand, one".