666632625263 has 16 divisors (see below), whose sum is σ = 770045784480. Its totient is φ = 570357427200.

The previous prime is 666632625259. The next prime is 666632625277. The reversal of 666632625263 is 362526236666.

It is not a de Polignac number, because 666632625263 - 2² = 666632625259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666632625563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5709473 + ... + 5825061.

It is an arithmetic number, because the mean of its divisors is an integer number (48127861530).

Almost surely, 2^666632625263 is an apocalyptic number.

666632625263 is a deficient number, since it is larger than the sum of its proper divisors (103413159217).

666632625263 is a wasteful number, since it uses less digits than its factorization.

666632625263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146458.

The product of its digits is 16796160, while the sum is 53.

The spelling of 666632625263 in words is "six hundred sixty-six billion, six hundred thirty-two million, six hundred twenty-five thousand, two hundred sixty-three".