2002011199978 has 16 divisors (see below), whose sum is σ = 3059843877216. Its totient is φ = 982065295120.

The previous prime is 2002011199873. The next prime is 2002011199987. The reversal of 2002011199978 is 8799911102002.

It is a happy number.

It is an unprimeable number.

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, 1481325 + ... + 2489647.

It is an arithmetic number, because the mean of its divisors is an integer number (191240242326).

Almost surely, 2^{2002011199978} is an apocalyptic number.

2002011199978 is a deficient number, since it is larger than the sum of its proper divisors (1057832677238).

2002011199978 is a wasteful number, since it uses less digits than its factorization.

2002011199978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027109.

The product of its (nonzero) digits is 163296, while the sum is 49.

The spelling of 2002011199978 in words is "two trillion, two billion, eleven million, one hundred ninety-nine thousand, nine hundred seventy-eight".