2001685180355 has 8 divisors (see below), whose sum is σ = 2745168247392. Its totient is φ = 1372584123648.

The previous prime is 2001685180337. The next prime is 2001685180357. The reversal of 2001685180355 is 5530815861002.

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 2001685180355 - 2¹⁰ = 2001685179331 is a prime.

It is a super-2 number, since 2×2001685180355² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001685180357) 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, 28595502542 + ... + 28595502611.

It is an arithmetic number, because the mean of its divisors is an integer number (343146030924).

Almost surely, 2^{2001685180355} is an apocalyptic number.

2001685180355 is a deficient number, since it is larger than the sum of its proper divisors (743483067037).

2001685180355 is an equidigital number, since it uses as much as digits as its factorization.

2001685180355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57191005165.

The product of its (nonzero) digits is 288000, while the sum is 44.

The spelling of 2001685180355 in words is "two trillion, one billion, six hundred eighty-five million, one hundred eighty thousand, three hundred fifty-five".