6663076868661 has 16 divisors (see below), whose sum is σ = 8900238023040. Its totient is φ = 4433984398080.

The previous prime is 6663076868653. The next prime is 6663076868671. The reversal of 6663076868661 is 1668686703666.

It is not a de Polignac number, because 6663076868661 - 2³ = 6663076868653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663076868641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31564776 + ... + 31775166.

It is an arithmetic number, because the mean of its divisors is an integer number (556264876440).

Almost surely, 2^{6663076868661} is an apocalyptic number.

It is an amenable number.

6663076868661 is a deficient number, since it is larger than the sum of its proper divisors (2237161154379).

6663076868661 is a wasteful number, since it uses less digits than its factorization.

6663076868661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229516.

The product of its (nonzero) digits is 376233984, while the sum is 69.

The spelling of 6663076868661 in words is "six trillion, six hundred sixty-three billion, seventy-six million, eight hundred sixty-eight thousand, six hundred sixty-one".