19745969667652 has 24 divisors (see below), whose sum is σ = 34885340574336. Its totient is φ = 9778850272128.

The previous prime is 19745969667647. The next prime is 19745969667679. The reversal of 19745969667652 is 25676696954791.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14441248 + ... + 15749335.

It is an arithmetic number, because the mean of its divisors is an integer number (1453555857264).

Almost surely, 2^{19745969667652} is an apocalyptic number.

It is an amenable number.

19745969667652 is a deficient number, since it is larger than the sum of its proper divisors (15139370906684).

19745969667652 is a wasteful number, since it uses less digits than its factorization.

19745969667652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30192147 (or 30192145 counting only the distinct ones).

The product of its digits is 9258883200, while the sum is 82.

The spelling of 19745969667652 in words is "nineteen trillion, seven hundred forty-five billion, nine hundred sixty-nine million, six hundred sixty-seven thousand, six hundred fifty-two".