19799486429171 has 2 divisors, whose sum is σ = 19799486429172. Its totient is φ = 19799486429170.

The previous prime is 19799486429143. The next prime is 19799486429197. The reversal of 19799486429171 is 17192468499791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19799486429171 - 2¹⁰ = 19799486428147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19799486429092 and 19799486429101.

It is not a weakly prime, because it can be changed into another prime (19799486428171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9899743214585 + 9899743214586.

It is an arithmetic number, because the mean of its divisors is an integer number (9899743214586).

Almost surely, 2^{19799486429171} is an apocalyptic number.

19799486429171 is a deficient number, since it is larger than the sum of its proper divisors (1).

19799486429171 is an equidigital number, since it uses as much as digits as its factorization.

19799486429171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493807104, while the sum is 77.

The spelling of 19799486429171 in words is "nineteen trillion, seven hundred ninety-nine billion, four hundred eighty-six million, four hundred twenty-nine thousand, one hundred seventy-one".