20000101918191 has 16 divisors (see below), whose sum is σ = 29463065743104. Its totient is φ = 12003471227264.

The previous prime is 20000101918183. The next prime is 20000101918207. The reversal of 20000101918191 is 19181910100002.

It is a cyclic number.

It is not a de Polignac number, because 20000101918191 - 2³ = 20000101918183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000101918591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8525191461 + ... + 8525193806.

It is an arithmetic number, because the mean of its divisors is an integer number (1841441608944).

Almost surely, 2^{20000101918191} is an apocalyptic number.

20000101918191 is a deficient number, since it is larger than the sum of its proper divisors (9462963824913).

20000101918191 is a wasteful number, since it uses less digits than its factorization.

20000101918191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17050385310.

The product of its (nonzero) digits is 1296, while the sum is 33.

The spelling of 20000101918191 in words is "twenty trillion, one hundred one million, nine hundred eighteen thousand, one hundred ninety-one".