663744712742 has 4 divisors (see below), whose sum is σ = 995617069116. Its totient is φ = 331872356370.

The previous prime is 663744712723. The next prime is 663744712783. The reversal of 663744712742 is 247217447366.

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, 165936178184 + ... + 165936178187.

It is an arithmetic number, because the mean of its divisors is an integer number (248904267279).

Almost surely, 2^663744712742 is an apocalyptic number.

663744712742 is a deficient number, since it is larger than the sum of its proper divisors (331872356374).

663744712742 is a wasteful number, since it uses less digits than its factorization.

663744712742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331872356373.

The product of its digits is 9483264, while the sum is 53.

The spelling of 663744712742 in words is "six hundred sixty-three billion, seven hundred forty-four million, seven hundred twelve thousand, seven hundred forty-two".