19628193492865 has 8 divisors (see below), whose sum is σ = 23563410828480. Its totient is φ = 15696169036272.

The previous prime is 19628193492857. The next prime is 19628193492889. The reversal of 19628193492865 is 56829439182691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19628193492865 - 2³ = 19628193492857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798206229 + ... + 798230818.

It is an arithmetic number, because the mean of its divisors is an integer number (2945426353560).

Almost surely, 2^{19628193492865} is an apocalyptic number.

It is an amenable number.

19628193492865 is a deficient number, since it is larger than the sum of its proper divisors (3935217335615).

19628193492865 is a wasteful number, since it uses less digits than its factorization.

19628193492865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596439511.

The product of its digits is 403107840, while the sum is 73.

The spelling of 19628193492865 in words is "nineteen trillion, six hundred twenty-eight billion, one hundred ninety-three million, four hundred ninety-two thousand, eight hundred sixty-five".