266716727120 has 80 divisors (see below), whose sum is σ = 681134797440. Its totient is φ = 96677171712.

The previous prime is 266716727071. The next prime is 266716727129. The reversal of 266716727120 is 21727617662.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×266716727120² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266716727129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3779639 + ... + 3849558.

It is an arithmetic number, because the mean of its divisors is an integer number (8514184968).

Almost surely, 2^266716727120 is an apocalyptic number.

266716727120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266716727120 is an abundant number, since it is smaller than the sum of its proper divisors (414418070320).

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

266716727120 is a wasteful number, since it uses less digits than its factorization.

266716727120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7629252 (or 7629246 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 47.

The spelling of 266716727120 in words is "two hundred sixty-six billion, seven hundred sixteen million, seven hundred twenty-seven thousand, one hundred twenty".