66448829019 has 8 divisors (see below), whose sum is σ = 88599631680. Its totient is φ = 44298622856.

The previous prime is 66448829017. The next prime is 66448829093. The reversal of 66448829019 is 91092884466.

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

It is a cyclic number.

It is not a de Polignac number, because 66448829019 - 2¹ = 66448829017 is a prime.

It is a super-2 number, since 2×66448829019² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66448829019.

It is not an unprimeable number, because it can be changed into a prime (66448829017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339964 + ... + 498470.

It is an arithmetic number, because the mean of its divisors is an integer number (11074953960).

Almost surely, 2^66448829019 is an apocalyptic number.

66448829019 is a deficient number, since it is larger than the sum of its proper divisors (22150802661).

66448829019 is a wasteful number, since it uses less digits than its factorization.

66448829019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298249.

The product of its (nonzero) digits is 5971968, while the sum is 57.

The spelling of 66448829019 in words is "sixty-six billion, four hundred forty-eight million, eight hundred twenty-nine thousand, nineteen".