2002001919161 has 2 divisors, whose sum is σ = 2002001919162. Its totient is φ = 2002001919160.

The previous prime is 2002001919037. The next prime is 2002001919163. The reversal of 2002001919161 is 1619191002002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1124566927936 + 877434991225 = 1060456^2 + 936715^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002001919161 - 2²⁶ = 2001934810297 is a prime.

Together with 2002001919163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2002001919163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001000959580 + 1001000959581.

It is an arithmetic number, because the mean of its divisors is an integer number (1001000959581).

Almost surely, 2^{2002001919161} is an apocalyptic number.

It is an amenable number.

2002001919161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002001919161 is an equidigital number, since it uses as much as digits as its factorization.

2002001919161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 32.

The spelling of 2002001919161 in words is "two trillion, two billion, one million, nine hundred nineteen thousand, one hundred sixty-one".