2640521233533 has 8 divisors (see below), whose sum is σ = 3544323804000. Its totient is φ = 1748533076048.

The previous prime is 2640521233513. The next prime is 2640521233577. The reversal of 2640521233533 is 3353321250462.

2640521233533 is digitally balanced in base 2, because in such base 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2640521233533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2640521233491 and 2640521233500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640521233513) 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, 2953602723 + ... + 2953603616.

It is an arithmetic number, because the mean of its divisors is an integer number (443040475500).

Almost surely, 2^{2640521233533} is an apocalyptic number.

It is an amenable number.

2640521233533 is a deficient number, since it is larger than the sum of its proper divisors (903802570467).

2640521233533 is a wasteful number, since it uses less digits than its factorization.

2640521233533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5907206491.

The product of its (nonzero) digits is 388800, while the sum is 39.

Adding to 2640521233533 its reverse (3353321250462), we get a palindrome (5993842483995).

The spelling of 2640521233533 in words is "two trillion, six hundred forty billion, five hundred twenty-one million, two hundred thirty-three thousand, five hundred thirty-three".