66424347024 has 80 divisors (see below), whose sum is σ = 204636521472. Its totient is φ = 18153235584.

The previous prime is 66424346987. The next prime is 66424347127. The reversal of 66424347024 is 42074342466.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 15 ways as a sum of consecutive naturals, for example, 4289914 + ... + 4305369.

Almost surely, 2^66424347024 is an apocalyptic number.

It is an amenable number.

66424347024 is an abundant number, since it is smaller than the sum of its proper divisors (138212174448).

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

66424347024 is a wasteful number, since it uses less digits than its factorization.

66424347024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8595324 (or 8595318 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 42.

The spelling of 66424347024 in words is "sixty-six billion, four hundred twenty-four million, three hundred forty-seven thousand, twenty-four".