19782533066189 has 4 divisors (see below), whose sum is σ = 19782693368256. Its totient is φ = 19782372764124.

The previous prime is 19782533066147. The next prime is 19782533066201. The reversal of 19782533066189 is 98166033528791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19782533066189 is a prime.

It is a super-2 number, since 2×19782533066189² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19782533066789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79965779 + ... + 80212784.

It is an arithmetic number, because the mean of its divisors is an integer number (4945673342064).

Almost surely, 2^{19782533066189} is an apocalyptic number.

It is an amenable number.

19782533066189 is a deficient number, since it is larger than the sum of its proper divisors (160302067).

19782533066189 is a wasteful number, since it uses less digits than its factorization.

19782533066189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160302066.

The product of its (nonzero) digits is 117573120, while the sum is 68.

The spelling of 19782533066189 in words is "nineteen trillion, seven hundred eighty-two billion, five hundred thirty-three million, sixty-six thousand, one hundred eighty-nine".