19681608960001 has 4 divisors (see below), whose sum is σ = 19831850249904. Its totient is φ = 19531367670100.

The previous prime is 19681608959977. The next prime is 19681608960059. The reversal of 19681608960001 is 10006980618691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19681608960001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19681608960901) 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, 75120644755 + ... + 75120645016.

It is an arithmetic number, because the mean of its divisors is an integer number (4957962562476).

Almost surely, 2^{19681608960001} is an apocalyptic number.

It is an amenable number.

19681608960001 is a deficient number, since it is larger than the sum of its proper divisors (150241289903).

19681608960001 is a wasteful number, since it uses less digits than its factorization.

19681608960001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150241289902.

The product of its (nonzero) digits is 1119744, while the sum is 55.

The spelling of 19681608960001 in words is "nineteen trillion, six hundred eighty-one billion, six hundred eight million, nine hundred sixty thousand, one".