19680368861 has 8 divisors (see below), whose sum is σ = 20361300480. Its totient is φ = 18999590512.

The previous prime is 19680368849. The next prime is 19680368881. The reversal of 19680368861 is 16886308691.

It is a happy number.

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 19680368861 - 2²⁶ = 19613259997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19680368797 and 19680368806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19680368881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263276 + ... + 329658.

It is an arithmetic number, because the mean of its divisors is an integer number (2545162560).

Almost surely, 2^19680368861 is an apocalyptic number.

It is an amenable number.

19680368861 is a deficient number, since it is larger than the sum of its proper divisors (680931619).

19680368861 is a wasteful number, since it uses less digits than its factorization.

19680368861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76635.

The product of its (nonzero) digits is 2985984, while the sum is 56.

The spelling of 19680368861 in words is "nineteen billion, six hundred eighty million, three hundred sixty-eight thousand, eight hundred sixty-one".