5821321345 has 32 divisors (see below), whose sum is σ = 8153602560. Its totient is φ = 3907622400.

The previous prime is 5821321343. The next prime is 5821321357. The reversal of 5821321345 is 5431231285.

It is not a de Polignac number, because 5821321345 - 2¹ = 5821321343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5821321345.

It is not an unprimeable number, because it can be changed into a prime (5821321343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305364 + ... + 323866.

It is an arithmetic number, because the mean of its divisors is an integer number (254800080).

Almost surely, 2^5821321345 is an apocalyptic number.

It is an amenable number.

5821321345 is a deficient number, since it is larger than the sum of its proper divisors (2332281215).

5821321345 is a wasteful number, since it uses less digits than its factorization.

5821321345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18705.

The product of its digits is 28800, while the sum is 34.

The square root of 5821321345 is about 76297.5841360655. The cubic root of 5821321345 is about 1798.9007017142.

The spelling of 5821321345 in words is "five billion, eight hundred twenty-one million, three hundred twenty-one thousand, three hundred forty-five".