666005634336 has 48 divisors (see below), whose sum is σ = 1998016905024. Its totient is φ = 190287323904.

The previous prime is 666005634319. The next prime is 666005634373. The reversal of 666005634336 is 633436500666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 495539235 + ... + 495540578.

It is an arithmetic number, because the mean of its divisors is an integer number (41625352188).

Almost surely, 2^666005634336 is an apocalyptic number.

It is an amenable number.

666005634336 is an abundant number, since it is smaller than the sum of its proper divisors (1332011270688).

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

666005634336 is a wasteful number, since it uses less digits than its factorization.

666005634336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991079833 (or 991079825 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 48.

The spelling of 666005634336 in words is "six hundred sixty-six billion, five million, six hundred thirty-four thousand, three hundred thirty-six".