266716725079 has 24 divisors (see below), whose sum is σ = 322304356800. Its totient is φ = 219807241920.

The previous prime is 266716725071. The next prime is 266716725089. The reversal of 266716725079 is 970527617662.

It is not a de Polignac number, because 266716725079 - 2³ = 266716725071 is a prime.

It is a super-2 number, since 2×266716725079² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266716725071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53052 + ... + 732289.

It is an arithmetic number, because the mean of its divisors is an integer number (13429348200).

Almost surely, 2^266716725079 is an apocalyptic number.

266716725079 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

266716725079 is a deficient number, since it is larger than the sum of its proper divisors (55587631721).

266716725079 is a wasteful number, since it uses less digits than its factorization.

266716725079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785623 (or 785616 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 58.

The spelling of 266716725079 in words is "two hundred sixty-six billion, seven hundred sixteen million, seven hundred twenty-five thousand, seventy-nine".