2543213325321 has 16 divisors (see below), whose sum is σ = 3767753880000. Its totient is φ = 1695461854464.

The previous prime is 2543213325307. The next prime is 2543213325353. The reversal of 2543213325321 is 1235233123452.

2543213325321 is a `hidden beast` number, since 2 + 5 + 4 + 3 + 2 + 1 + 3 + 325 + 321 = 666.

It is not a de Polignac number, because 2543213325321 - 2⁷ = 2543213325193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2543213325391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3899305 + ... + 4504553.

It is an arithmetic number, because the mean of its divisors is an integer number (235484617500).

Almost surely, 2^{2543213325321} is an apocalyptic number.

It is an amenable number.

2543213325321 is a deficient number, since it is larger than the sum of its proper divisors (1224540554679).

2543213325321 is a wasteful number, since it uses less digits than its factorization.

2543213325321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760885 (or 760879 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

Adding to 2543213325321 its reverse (1235233123452), we get a palindrome (3778446448773).

The spelling of 2543213325321 in words is "two trillion, five hundred forty-three billion, two hundred thirteen million, three hundred twenty-five thousand, three hundred twenty-one".