266645025022 has 4 divisors (see below), whose sum is σ = 399967537536. Its totient is φ = 133322512510.

The previous prime is 266645025019. The next prime is 266645025047. The reversal of 266645025022 is 220520546662.

It is a happy number.

266645025022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×266645025022² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 66661256254 + ... + 66661256257.

It is an arithmetic number, because the mean of its divisors is an integer number (99991884384).

Almost surely, 2^266645025022 is an apocalyptic number.

266645025022 is a deficient number, since it is larger than the sum of its proper divisors (133322512514).

266645025022 is a wasteful number, since it uses less digits than its factorization.

266645025022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133322512513.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 266645025022 in words is "two hundred sixty-six billion, six hundred forty-five million, twenty-five thousand, twenty-two".