19708879903879 has 8 divisors (see below), whose sum is σ = 19845516600000. Its totient is φ = 19572301372512.

The previous prime is 19708879903847. The next prime is 19708879903901. The reversal of 19708879903879 is 97830997880791.

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 19708879903879 - 2⁵ = 19708879903847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19708879903796 and 19708879903805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19708879903829) 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, 13861039 + ... + 15216640.

It is an arithmetic number, because the mean of its divisors is an integer number (2480689575000).

Almost surely, 2^{19708879903879} is an apocalyptic number.

19708879903879 is a deficient number, since it is larger than the sum of its proper divisors (136636696121).

19708879903879 is a wasteful number, since it uses less digits than its factorization.

19708879903879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29082377.

The product of its (nonzero) digits is 3456649728, while the sum is 85.

The spelling of 19708879903879 in words is "nineteen trillion, seven hundred eight billion, eight hundred seventy-nine million, nine hundred three thousand, eight hundred seventy-nine".