20020001919181 has 8 divisors (see below), whose sum is σ = 21900837758400. Its totient is φ = 18149305357440.

The previous prime is 20020001919157. The next prime is 20020001919233. The reversal of 20020001919181 is 18191910002002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20020001919181 - 2¹¹ = 20020001917133 is a prime.

It is a super-2 number, since 2×20020001919181² (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 (20020001619181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2534815236 + ... + 2534823133.

It is an arithmetic number, because the mean of its divisors is an integer number (2737604719800).

Almost surely, 2^{20020001919181} is an apocalyptic number.

It is an amenable number.

20020001919181 is a deficient number, since it is larger than the sum of its proper divisors (1880835839219).

20020001919181 is a wasteful number, since it uses less digits than its factorization.

20020001919181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5069638739.

The product of its (nonzero) digits is 2592, while the sum is 34.

The spelling of 20020001919181 in words is "twenty trillion, twenty billion, one million, nine hundred nineteen thousand, one hundred eighty-one".