1920717871713 has 12 divisors (see below), whose sum is σ = 2863866074368. Its totient is φ = 1239172820280.

The previous prime is 1920717871711. The next prime is 1920717871717. The reversal of 1920717871713 is 3171787170291.

It is not a de Polignac number, because 1920717871713 - 2¹ = 1920717871711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1920717871713.

It is not an unprimeable number, because it can be changed into a prime (1920717871711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3442146445 + ... + 3442147002.

Almost surely, 2^{1920717871713} is an apocalyptic number.

It is an amenable number.

1920717871713 is a deficient number, since it is larger than the sum of its proper divisors (943148202655).

1920717871713 is a wasteful number, since it uses less digits than its factorization.

1920717871713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884293484 (or 6884293481 counting only the distinct ones).

The product of its (nonzero) digits is 1037232, while the sum is 54.

The spelling of 1920717871713 in words is "one trillion, nine hundred twenty billion, seven hundred seventeen million, eight hundred seventy-one thousand, seven hundred thirteen".