266023206455 has 4 divisors (see below), whose sum is σ = 319227847752. Its totient is φ = 212818565160.

The previous prime is 266023206443. The next prime is 266023206461. The reversal of 266023206455 is 554602320662.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 266023206455 - 2²⁰ = 266022157879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26602320641 + ... + 26602320650.

It is an arithmetic number, because the mean of its divisors is an integer number (79806961938).

Almost surely, 2^266023206455 is an apocalyptic number.

266023206455 is a deficient number, since it is larger than the sum of its proper divisors (53204641297).

266023206455 is an equidigital number, since it uses as much as digits as its factorization.

266023206455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53204641296.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 266023206455 in words is "two hundred sixty-six billion, twenty-three million, two hundred six thousand, four hundred fifty-five".