19712089712 has 20 divisors (see below), whose sum is σ = 43648198896. Its totient is φ = 8448038400.

The previous prime is 19712089711. The next prime is 19712089723. The reversal of 19712089712 is 21798021791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19712089711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88000289 + ... + 88000512.

Almost surely, 2^19712089712 is an apocalyptic number.

It is an amenable number.

19712089712 is an abundant number, since it is smaller than the sum of its proper divisors (23936109184).

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

19712089712 is a wasteful number, since it uses less digits than its factorization.

19712089712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176000816 (or 176000810 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 47.

The spelling of 19712089712 in words is "nineteen billion, seven hundred twelve million, eighty-nine thousand, seven hundred twelve".