2001687033667 has 8 divisors (see below), whose sum is σ = 2113882170624. Its totient is φ = 1891589002248.

The previous prime is 2001687033653. The next prime is 2001687033677. The reversal of 2001687033667 is 7663307861002.

It is a happy number.

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 2001687033667 - 2¹⁵ = 2001687000899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001687033667.

It is not an unprimeable number, because it can be changed into a prime (2001687033677) 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, 524274423 + ... + 524278240.

It is an arithmetic number, because the mean of its divisors is an integer number (264235271328).

Almost surely, 2^{2001687033667} is an apocalyptic number.

2001687033667 is a deficient number, since it is larger than the sum of its proper divisors (112195136957).

2001687033667 is a wasteful number, since it uses less digits than its factorization.

2001687033667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048552769.

The product of its (nonzero) digits is 1524096, while the sum is 49.

The spelling of 2001687033667 in words is "two trillion, one billion, six hundred eighty-seven million, thirty-three thousand, six hundred sixty-seven".