6445564555546 has 8 divisors (see below), whose sum is σ = 9668592696384. Its totient is φ = 3222700323420.

The previous prime is 6445564555543. The next prime is 6445564555601. The reversal of 6445564555546 is 6455554655446.

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

It is not an unprimeable number, because it can be changed into a prime (6445564555543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40878820 + ... + 41036191.

It is an arithmetic number, because the mean of its divisors is an integer number (1208574087048).

Almost surely, 2^{6445564555546} is an apocalyptic number.

6445564555546 is a deficient number, since it is larger than the sum of its proper divisors (3223028140838).

6445564555546 is a wasteful number, since it uses less digits than its factorization.

6445564555546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81954356.

The product of its digits is 864000000, while the sum is 64.

The spelling of 6445564555546 in words is "six trillion, four hundred forty-five billion, five hundred sixty-four million, five hundred fifty-five thousand, five hundred forty-six".