19321096668 has 12 divisors (see below), whose sum is σ = 45082558920. Its totient is φ = 6440365552.

The previous prime is 19321096657. The next prime is 19321096693. The reversal of 19321096668 is 86669012391.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 19321096668.

It is a congruent number.

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, 805045683 + ... + 805045706.

It is an arithmetic number, because the mean of its divisors is an integer number (3756879910).

Almost surely, 2^19321096668 is an apocalyptic number.

It is an amenable number.

19321096668 is an abundant number, since it is smaller than the sum of its proper divisors (25761462252).

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

19321096668 is a wasteful number, since it uses less digits than its factorization.

19321096668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610091396 (or 1610091394 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 19321096668 in words is "nineteen billion, three hundred twenty-one million, ninety-six thousand, six hundred sixty-eight".