266472147160721 has 16 divisors (see below), whose sum is σ = 279020893881600. Its totient is φ = 254004055557120.

The previous prime is 266472147160651. The next prime is 266472147160787. The reversal of 266472147160721 is 127061741274662.

It is a happy number.

266472147160721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-266472147160721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (266472147163721) 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, 24362201 + ... + 33562793.

It is an arithmetic number, because the mean of its divisors is an integer number (17438805867600).

Almost surely, 2^{266472147160721} is an apocalyptic number.

It is an amenable number.

266472147160721 is a deficient number, since it is larger than the sum of its proper divisors (12548746720879).

266472147160721 is a wasteful number, since it uses less digits than its factorization.

266472147160721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9204976.

The product of its (nonzero) digits is 9483264, while the sum is 56.

The spelling of 266472147160721 in words is "two hundred sixty-six trillion, four hundred seventy-two billion, one hundred forty-seven million, one hundred sixty thousand, seven hundred twenty-one".