2643643533 has 8 divisors (see below), whose sum is σ = 3527166496. Its totient is φ = 1761274800.

The previous prime is 2643643507. The next prime is 2643643537. The reversal of 2643643533 is 3353463462.

2643643533 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2643643533 - 2¹⁶ = 2643577997 is a prime.

It is a super-2 number, since 2×2643643533² = 13977702259145444178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2643643491 and 2643643500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643643537) 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, 283198 + ... + 292383.

It is an arithmetic number, because the mean of its divisors is an integer number (440895812).

Almost surely, 2^2643643533 is an apocalyptic number.

It is an amenable number.

2643643533 is a deficient number, since it is larger than the sum of its proper divisors (883522963).

2643643533 is a wasteful number, since it uses less digits than its factorization.

2643643533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577115.

The product of its digits is 466560, while the sum is 39.

The square root of 2643643533 is about 51416.3741720476. The cubic root of 2643643533 is about 1382.7201707713.

The spelling of 2643643533 in words is "two billion, six hundred forty-three million, six hundred forty-three thousand, five hundred thirty-three".