266115166555055 has 8 divisors (see below), whose sum is σ = 319339942548144. Its totient is φ = 212890971456000.

The previous prime is 266115166555019. The next prime is 266115166555057. The reversal of 266115166555055 is 550555661511662.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 266115166555055 - 2¹⁶ = 266115166489519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266115166554985 and 266115166555003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266115166555057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144215021 + ... + 146048630.

It is an arithmetic number, because the mean of its divisors is an integer number (39917492818518).

Almost surely, 2^{266115166555055} is an apocalyptic number.

266115166555055 is a deficient number, since it is larger than the sum of its proper divisors (53224775993089).

266115166555055 is a wasteful number, since it uses less digits than its factorization.

266115166555055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290447017.

The product of its (nonzero) digits is 40500000, while the sum is 59.

The spelling of 266115166555055 in words is "two hundred sixty-six trillion, one hundred fifteen billion, one hundred sixty-six million, five hundred fifty-five thousand, fifty-five".