2002001019979 has 2 divisors, whose sum is σ = 2002001019980. Its totient is φ = 2002001019978.

The previous prime is 2002001019971. The next prime is 2002001020067. The reversal of 2002001019979 is 9799101002002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2002001019979 - 2³ = 2002001019971 is a prime.

It is not a weakly prime, because it can be changed into another prime (2002001019971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001000509989 + 1001000509990.

It is an arithmetic number, because the mean of its divisors is an integer number (1001000509990).

Almost surely, 2^{2002001019979} is an apocalyptic number.

2002001019979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002001019979 is an equidigital number, since it uses as much as digits as its factorization.

2002001019979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 40.

The spelling of 2002001019979 in words is "two trillion, two billion, one million, nineteen thousand, nine hundred seventy-nine".