266552530290 has 48 divisors (see below), whose sum is σ = 702797674176. Its totient is φ = 70079536800.

The previous prime is 266552530261. The next prime is 266552530291. The reversal of 266552530290 is 92035255662.

266552530290 is a `hidden beast` number, since 2 + 6 + 6 + 5 + 525 + 30 + 2 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (266552530291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20850616 + ... + 20863395.

It is an arithmetic number, because the mean of its divisors is an integer number (14641618212).

Almost surely, 2^266552530290 is an apocalyptic number.

266552530290 is an abundant number, since it is smaller than the sum of its proper divisors (436245143886).

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

266552530290 is a wasteful number, since it uses less digits than its factorization.

266552530290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41714095 (or 41714092 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The spelling of 266552530290 in words is "two hundred sixty-six billion, five hundred fifty-two million, five hundred thirty thousand, two hundred ninety".