66552440044 has 12 divisors (see below), whose sum is σ = 117208597744. Its totient is φ = 33064269264.

The previous prime is 66552440033. The next prime is 66552440069. The reversal of 66552440044 is 44004425566.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66552439979 and 66552440006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52986984 + ... + 52988239.

Almost surely, 2^66552440044 is an apocalyptic number.

It is an amenable number.

66552440044 is a deficient number, since it is larger than the sum of its proper divisors (50656157700).

66552440044 is a wasteful number, since it uses less digits than its factorization.

66552440044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105975384 (or 105975382 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 40.

The spelling of 66552440044 in words is "sixty-six billion, five hundred fifty-two million, four hundred forty thousand, forty-four".