2001666702037 has 8 divisors (see below), whose sum is σ = 2005609579776. Its totient is φ = 1997725735872.

The previous prime is 2001666702019. The next prime is 2001666702043. The reversal of 2001666702037 is 7302076661002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001666702037 - 2³⁹ = 1451910888149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001666702067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1627548 + ... + 2579194.

It is an arithmetic number, because the mean of its divisors is an integer number (250701197472).

Almost surely, 2^{2001666702037} is an apocalyptic number.

It is an amenable number.

2001666702037 is a deficient number, since it is larger than the sum of its proper divisors (3942877739).

2001666702037 is an equidigital number, since it uses as much as digits as its factorization.

2001666702037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955787.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 2001666702037 in words is "two trillion, one billion, six hundred sixty-six million, seven hundred two thousand, thirty-seven".