2001142859164 has 12 divisors (see below), whose sum is σ = 3654260873424. Its totient is φ = 957068323904.

The previous prime is 2001142859159. The next prime is 2001142859171. The reversal of 2001142859164 is 4619582411002.

It is a self number, because there is not a number n which added to its sum of digits gives 2001142859164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10875776317 + ... + 10875776500.

It is an arithmetic number, because the mean of its divisors is an integer number (304521739452).

Almost surely, 2^{2001142859164} is an apocalyptic number.

It is an amenable number.

2001142859164 is a deficient number, since it is larger than the sum of its proper divisors (1653118014260).

2001142859164 is a wasteful number, since it uses less digits than its factorization.

2001142859164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21751552844 (or 21751552842 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 2001142859164 in words is "two trillion, one billion, one hundred forty-two million, eight hundred fifty-nine thousand, one hundred sixty-four".