266506531101 has 32 divisors (see below), whose sum is σ = 398410410240. Its totient is φ = 176058086400.

The previous prime is 266506531061. The next prime is 266506531117. The reversal of 266506531101 is 101135605662.

266506531101 is a `hidden beast` number, since 2 + 66 + 50 + 6 + 531 + 10 + 1 = 666.

266506531101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 266506531101 - 2¹¹ = 266506529053 is a prime.

It is a super-2 number, since 2×266506531101² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266506531171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19247941 + ... + 19261781.

It is an arithmetic number, because the mean of its divisors is an integer number (12450325320).

Almost surely, 2^266506531101 is an apocalyptic number.

It is an amenable number.

266506531101 is a deficient number, since it is larger than the sum of its proper divisors (131903879139).

266506531101 is a wasteful number, since it uses less digits than its factorization.

266506531101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20274 (or 20268 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 266506531101 in words is "two hundred sixty-six billion, five hundred six million, five hundred thirty-one thousand, one hundred one".