6663601330742 has 4 divisors (see below), whose sum is σ = 9995401996116. Its totient is φ = 3331800665370.

The previous prime is 6663601330703. The next prime is 6663601330811. The reversal of 6663601330742 is 2470331063666.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1665900332684 + ... + 1665900332687.

It is an arithmetic number, because the mean of its divisors is an integer number (2498850499029).

Almost surely, 2^{6663601330742} is an apocalyptic number.

6663601330742 is a deficient number, since it is larger than the sum of its proper divisors (3331800665374).

6663601330742 is a wasteful number, since it uses less digits than its factorization.

6663601330742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331800665373.

The product of its (nonzero) digits is 1959552, while the sum is 47.

The spelling of 6663601330742 in words is "six trillion, six hundred sixty-three billion, six hundred one million, three hundred thirty thousand, seven hundred forty-two".