19660147712 has 44 divisors (see below), whose sum is σ = 40656367680. Its totient is φ = 9491091456.

The previous prime is 19660147711. The next prime is 19660147733. The reversal of 19660147712 is 21774106691.

It is not an unprimeable number, because it can be changed into a prime (19660147711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301328 + ... + 360719.

Almost surely, 2^19660147712 is an apocalyptic number.

It is an amenable number.

19660147712 is an abundant number, since it is smaller than the sum of its proper divisors (20996219968).

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

19660147712 is an equidigital number, since it uses as much as digits as its factorization.

19660147712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662096 (or 662078 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 44.

The spelling of 19660147712 in words is "nineteen billion, six hundred sixty million, one hundred forty-seven thousand, seven hundred twelve".