20429784204193 has 16 divisors (see below), whose sum is σ = 25148675978496. Its totient is φ = 16161443743680.

The previous prime is 20429784204173. The next prime is 20429784204251. The reversal of 20429784204193 is 39140248792402.

It is a cyclic number.

It is not a de Polignac number, because 20429784204193 - 2⁹ = 20429784203681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20429784204173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18781453 + ... + 19839418.

It is an arithmetic number, because the mean of its divisors is an integer number (1571792248656).

Almost surely, 2^{20429784204193} is an apocalyptic number.

It is an amenable number.

20429784204193 is a deficient number, since it is larger than the sum of its proper divisors (4718891774303).

20429784204193 is a wasteful number, since it uses less digits than its factorization.

20429784204193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38626704.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 20429784204193 in words is "twenty trillion, four hundred twenty-nine billion, seven hundred eighty-four million, two hundred four thousand, one hundred ninety-three".