2001668370335 has 16 divisors (see below), whose sum is σ = 2545758442656. Its totient is φ = 1505679479808.

The previous prime is 2001668370329. The next prime is 2001668370341. The reversal of 2001668370335 is 5330738661002.

It is an interprime number because it is at equal distance from previous prime (2001668370329) and next prime (2001668370341).

It is a cyclic number.

It is not a de Polignac number, because 2001668370335 - 2⁴⁰ = 902156742559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11310569 + ... + 11486178.

It is an arithmetic number, because the mean of its divisors is an integer number (159109902666).

Almost surely, 2^{2001668370335} is an apocalyptic number.

2001668370335 is a deficient number, since it is larger than the sum of its proper divisors (544090072321).

2001668370335 is a wasteful number, since it uses less digits than its factorization.

2001668370335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22797802.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 2001668370335 in words is "two trillion, one billion, six hundred sixty-eight million, three hundred seventy thousand, three hundred thirty-five".