19784675741663 has 12 divisors (see below), whose sum is σ = 23015294996400. Its totient is φ = 16957948567392.

The previous prime is 19784675741639. The next prime is 19784675741669. The reversal of 19784675741663 is 36614757648791.

It is not a de Polignac number, because 19784675741663 - 2¹⁰ = 19784675740639 is a prime.

It is a super-2 number, since 2×19784675741663² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19784675741669) 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, 1657838 + ... + 6505211.

It is an arithmetic number, because the mean of its divisors is an integer number (1917941249700).

Almost surely, 2^{19784675741663} is an apocalyptic number.

19784675741663 is a deficient number, since it is larger than the sum of its proper divisors (3230619254737).

19784675741663 is an equidigital number, since it uses as much as digits as its factorization.

19784675741663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8212526 (or 8212519 counting only the distinct ones).

The product of its digits is 1280240640, while the sum is 74.

The spelling of 19784675741663 in words is "nineteen trillion, seven hundred eighty-four billion, six hundred seventy-five million, seven hundred forty-one thousand, six hundred sixty-three".