266642441430 has 32 divisors (see below), whose sum is σ = 654824231424. Its totient is φ = 69451054176.

The previous prime is 266642441423. The next prime is 266642441431. The reversal of 266642441430 is 34144246662.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266642441431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103348494 + ... + 103351073.

It is an arithmetic number, because the mean of its divisors is an integer number (20463257232).

Almost surely, 2^266642441430 is an apocalyptic number.

266642441430 is an abundant number, since it is smaller than the sum of its proper divisors (388181789994).

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

266642441430 is a wasteful number, since it uses less digits than its factorization.

266642441430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206699620.

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 266642441430 in words is "two hundred sixty-six billion, six hundred forty-two million, four hundred forty-one thousand, four hundred thirty".