2533067681 has 4 divisors (see below), whose sum is σ = 2533171200. Its totient is φ = 2532964164.

The previous prime is 2533067651. The next prime is 2533067683. The reversal of 2533067681 is 1867603352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2533067681 - 2²² = 2528873377 is a prime.

It is a super-2 number, since 2×2533067681² = 12832863753053435522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2533067683) 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, 7760 + ... + 71598.

It is an arithmetic number, because the mean of its divisors is an integer number (633292800).

Almost surely, 2^2533067681 is an apocalyptic number.

It is an amenable number.

2533067681 is a deficient number, since it is larger than the sum of its proper divisors (103519).

2533067681 is an equidigital number, since it uses as much as digits as its factorization.

2533067681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103518.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 2533067681 is about 50329.5905109509. The cubic root of 2533067681 is about 1363.1665834173.

The spelling of 2533067681 in words is "two billion, five hundred thirty-three million, sixty-seven thousand, six hundred eighty-one".