19968253553790 has 24 divisors (see below), whose sum is σ = 51917459240088. Its totient is φ = 5324867614320.

The previous prime is 19968253553681. The next prime is 19968253553819. The reversal of 19968253553790 is 9735535286991.

It is a happy number.

19968253553790 is a `hidden beast` number, since 1 + 9 + 9 + 6 + 82 + 5 + 3 + 5 + 537 + 9 + 0 = 666.

It is a super-3 number, since 3×19968253553790³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110934741876 + ... + 110934742055.

It is an arithmetic number, because the mean of its divisors is an integer number (2163227468337).

Almost surely, 2^{19968253553790} is an apocalyptic number.

19968253553790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19968253553790 is an abundant number, since it is smaller than the sum of its proper divisors (31949205686298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19968253553790 is a wasteful number, since it uses less digits than its factorization.

19968253553790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221869483944 (or 221869483941 counting only the distinct ones).

The product of its (nonzero) digits is 551124000, while the sum is 72.

The spelling of 19968253553790 in words is "nineteen trillion, nine hundred sixty-eight billion, two hundred fifty-three million, five hundred fifty-three thousand, seven hundred ninety".