666763580482236 has 72 divisors (see below), whose sum is σ = 1823847131643264. Its totient is φ = 212591286523440.

The previous prime is 666763580482217. The next prime is 666763580482243. The reversal of 666763580482236 is 632284085367666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14912385510 + ... + 14912430221.

It is an arithmetic number, because the mean of its divisors is an integer number (25331210161712).

Almost surely, 2^{666763580482236} is an apocalyptic number.

It is an amenable number.

666763580482236 is an abundant number, since it is smaller than the sum of its proper divisors (1157083551161028).

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

666763580482236 is a wasteful number, since it uses less digits than its factorization.

666763580482236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29824815773 (or 29824815759 counting only the distinct ones).

The product of its (nonzero) digits is 2508226560, while the sum is 72.

The spelling of 666763580482236 in words is "six hundred sixty-six trillion, seven hundred sixty-three billion, five hundred eighty million, four hundred eighty-two thousand, two hundred thirty-six".