2001701853687 has 4 divisors (see below), whose sum is σ = 2668935804920. Its totient is φ = 1334467902456.

The previous prime is 2001701853631. The next prime is 2001701853689. The reversal of 2001701853687 is 7863581071002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2001701853687 - 2²⁷ = 2001567635959 is a prime.

It is a super-2 number, since 2×2001701853687² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001701853689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333616975612 + ... + 333616975617.

It is an arithmetic number, because the mean of its divisors is an integer number (667233951230).

Almost surely, 2^{2001701853687} is an apocalyptic number.

2001701853687 is a deficient number, since it is larger than the sum of its proper divisors (667233951233).

2001701853687 is an equidigital number, since it uses as much as digits as its factorization.

2001701853687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667233951232.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 2001701853687 in words is "two trillion, one billion, seven hundred one million, eight hundred fifty-three thousand, six hundred eighty-seven".