2001119319978 has 16 divisors (see below), whose sum is σ = 4140246869280. Its totient is φ = 644038401776.

The previous prime is 2001119319967. The next prime is 2001119320001. The reversal of 2001119319978 is 8799139111002.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001119319978.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5750342700 + ... + 5750343047.

It is an arithmetic number, because the mean of its divisors is an integer number (258765429330).

Almost surely, 2^{2001119319978} is an apocalyptic number.

2001119319978 is an abundant number, since it is smaller than the sum of its proper divisors (2139127549302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001119319978 is a wasteful number, since it uses less digits than its factorization.

2001119319978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11500685781.

The product of its (nonzero) digits is 244944, while the sum is 51.

The spelling of 2001119319978 in words is "two trillion, one billion, one hundred nineteen million, three hundred nineteen thousand, nine hundred seventy-eight".