7731662320012 has 12 divisors (see below), whose sum is σ = 13759738027560. Its totient is φ = 3800308597856.

The previous prime is 7731662320001. The next prime is 7731662320033. The reversal of 7731662320012 is 2100232661377.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16380640273 + ... + 16380640744.

It is an arithmetic number, because the mean of its divisors is an integer number (1146644835630).

Almost surely, 2^{7731662320012} is an apocalyptic number.

It is an amenable number.

7731662320012 is a deficient number, since it is larger than the sum of its proper divisors (6028075707548).

7731662320012 is a wasteful number, since it uses less digits than its factorization.

7731662320012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32761281080 (or 32761281078 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

Adding to 7731662320012 its reverse (2100232661377), we get a palindrome (9831894981389).

The spelling of 7731662320012 in words is "seven trillion, seven hundred thirty-one billion, six hundred sixty-two million, three hundred twenty thousand, twelve".