6564242456020 has 48 divisors (see below), whose sum is σ = 13850960751936. Its totient is φ = 2613117024000.

The previous prime is 6564242455997. The next prime is 6564242456021. The reversal of 6564242456020 is 206542424656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564242456021) 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, 132825115 + ... + 132874525.

It is an arithmetic number, because the mean of its divisors is an integer number (288561682332).

Almost surely, 2^{6564242456020} is an apocalyptic number.

It is an amenable number.

6564242456020 is an abundant number, since it is smaller than the sum of its proper divisors (7286718295916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6564242456020 is a wasteful number, since it uses less digits than its factorization.

6564242456020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81112 (or 81110 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 46.

The spelling of 6564242456020 in words is "six trillion, five hundred sixty-four billion, two hundred forty-two million, four hundred fifty-six thousand, twenty".