19790795343917 has 12 divisors (see below), whose sum is σ = 22362020367264. Its totient is φ = 17474147056080.

The previous prime is 19790795343889. The next prime is 19790795343919. The reversal of 19790795343917 is 71934359709791.

It is not a de Polignac number, because 19790795343917 - 2³⁴ = 19773615474733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19790795343919) 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, 2545763459 + ... + 2545771232.

It is an arithmetic number, because the mean of its divisors is an integer number (1863501697272).

Almost surely, 2^{19790795343917} is an apocalyptic number.

It is an amenable number.

19790795343917 is a deficient number, since it is larger than the sum of its proper divisors (2571225023347).

19790795343917 is a wasteful number, since it uses less digits than its factorization.

19790795343917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091534740 (or 5091534727 counting only the distinct ones).

The product of its (nonzero) digits is 405076140, while the sum is 74.

The spelling of 19790795343917 in words is "nineteen trillion, seven hundred ninety billion, seven hundred ninety-five million, three hundred forty-three thousand, nine hundred seventeen".