66552357444 has 24 divisors (see below), whose sum is σ = 155757993888. Its totient is φ = 22117096320.

The previous prime is 66552357419. The next prime is 66552357451. The reversal of 66552357444 is 44475325566.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8373717 + ... + 8381660.

It is an arithmetic number, because the mean of its divisors is an integer number (6489916412).

Almost surely, 2^66552357444 is an apocalyptic number.

It is an amenable number.

66552357444 is an abundant number, since it is smaller than the sum of its proper divisors (89205636444).

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

66552357444 is a wasteful number, since it uses less digits than its factorization.

66552357444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16755715 (or 16755713 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 51.

The spelling of 66552357444 in words is "sixty-six billion, five hundred fifty-two million, three hundred fifty-seven thousand, four hundred forty-four".