2033700001681 has 4 divisors (see below), whose sum is σ = 2053835645364. Its totient is φ = 2013564358000.

The previous prime is 2033700001657. The next prime is 2033700001721. The reversal of 2033700001681 is 1861000073302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1802550593281 + 231149408400 = 1342591^2 + 480780^2 .

It is a cyclic number.

It is not a de Polignac number, because 2033700001681 - 2⁵ = 2033700001649 is a prime.

It is a super-2 number, since 2×2033700001681² (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 (2033700001651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10067821690 + ... + 10067821891.

It is an arithmetic number, because the mean of its divisors is an integer number (513458911341).

Almost surely, 2^{2033700001681} is an apocalyptic number.

It is an amenable number.

2033700001681 is a deficient number, since it is larger than the sum of its proper divisors (20135643683).

2033700001681 is a wasteful number, since it uses less digits than its factorization.

2033700001681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20135643682.

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 2033700001681 its reverse (1861000073302), we get a palindrome (3894700074983).

The spelling of 2033700001681 in words is "two trillion, thirty-three billion, seven hundred million, one thousand, six hundred eighty-one".