6446530356445 has 32 divisors (see below), whose sum is σ = 7941812997888. Its totient is φ = 5020724072448.

The previous prime is 6446530356421. The next prime is 6446530356449. The reversal of 6446530356445 is 5446530356446.

It is a cyclic number.

It is not a de Polignac number, because 6446530356445 - 2¹⁹ = 6446529832157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446530356449) 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, 80223427 + ... + 80303743.

It is an arithmetic number, because the mean of its divisors is an integer number (248181656184).

Almost surely, 2^{6446530356445} is an apocalyptic number.

It is an amenable number.

6446530356445 is a deficient number, since it is larger than the sum of its proper divisors (1495282641443).

6446530356445 is a wasteful number, since it uses less digits than its factorization.

6446530356445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81589.

The product of its (nonzero) digits is 62208000, while the sum is 55.

Subtracting from 6446530356445 its reverse (5446530356446), we obtain a palindrome (999999999999).

The spelling of 6446530356445 in words is "six trillion, four hundred forty-six billion, five hundred thirty million, three hundred fifty-six thousand, four hundred forty-five".