266730550722 has 80 divisors (see below), whose sum is σ = 629540445600. Its totient is φ = 84175822080.

The previous prime is 266730550721. The next prime is 266730550729. The reversal of 266730550722 is 227055037662.

266730550722 is a `hidden beast` number, since 2 + 6 + 6 + 73 + 0 + 550 + 7 + 22 = 666.

It is a super-2 number, since 2×266730550722² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266730550721) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4832722 + ... + 4887602.

It is an arithmetic number, because the mean of its divisors is an integer number (7869255570).

Almost surely, 2^266730550722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266730550722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314770222800).

266730550722 is an abundant number, since it is smaller than the sum of its proper divisors (362809894878).

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

266730550722 is a wasteful number, since it uses less digits than its factorization.

266730550722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56493 (or 56484 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 45.

The spelling of 266730550722 in words is "two hundred sixty-six billion, seven hundred thirty million, five hundred fifty thousand, seven hundred twenty-two".