266440623214 has 16 divisors (see below), whose sum is σ = 405321830496. Its totient is φ = 131333641600.

The previous prime is 266440623191. The next prime is 266440623221. The reversal of 266440623214 is 412326044662.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1929354 + ... + 2062834.

It is an arithmetic number, because the mean of its divisors is an integer number (25332614406).

Almost surely, 2^266440623214 is an apocalyptic number.

266440623214 is a deficient number, since it is larger than the sum of its proper divisors (138881207282).

266440623214 is a wasteful number, since it uses less digits than its factorization.

266440623214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147611.

The product of its (nonzero) digits is 331776, while the sum is 40.

Adding to 266440623214 its reverse (412326044662), we get a palindrome (678766667876).

The spelling of 266440623214 in words is "two hundred sixty-six billion, four hundred forty million, six hundred twenty-three thousand, two hundred fourteen".