19533342691044 has 216 divisors, whose sum is σ = 61860154240248. Its totient is φ = 5151270297600.

The previous prime is 19533342690989. The next prime is 19533342691067. The reversal of 19533342691044 is 44019624333591.

19533342691044 is a `hidden beast` number, since 1 + 9 + 5 + 3 + 334 + 269 + 1 + 0 + 44 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18506337444 + 19514836353600 = 136038^2 + 4417560^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 452128644 + ... + 452171844.

Almost surely, 2^{19533342691044} is an apocalyptic number.

19533342691044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19533342691044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30930077120124).

19533342691044 is an abundant number, since it is smaller than the sum of its proper divisors (42326811549204).

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

19533342691044 is a wasteful number, since it uses less digits than its factorization.

19533342691044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62955 (or 62943 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 19533342691044 in words is "nineteen trillion, five hundred thirty-three billion, three hundred forty-two million, six hundred ninety-one thousand, forty-four".