6566172000720 has 40 divisors (see below), whose sum is σ = 20355133202976. Its totient is φ = 1750979200128.

The previous prime is 6566172000653. The next prime is 6566172000721. The reversal of 6566172000720 is 270002716656.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×6566172000720² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566172000721) 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, 13679524762 + ... + 13679525241.

Almost surely, 2^{6566172000720} is an apocalyptic number.

6566172000720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6566172000720 is an abundant number, since it is smaller than the sum of its proper divisors (13788961202256).

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

6566172000720 is a wasteful number, since it uses less digits than its factorization.

6566172000720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27359050019 (or 27359050013 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 6566172000720 in words is "six trillion, five hundred sixty-six billion, one hundred seventy-two million, seven hundred twenty", and thus it is an aban number.