66324964428 has 48 divisors (see below), whose sum is σ = 171968944000. Its totient is φ = 22106350224.

The previous prime is 66324964423. The next prime is 66324964429. The reversal of 66324964428 is 82446942366.

66324964428 is a `hidden beast` number, since 66 + 32 + 496 + 44 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (66324964421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1680303 + ... + 1719321.

Almost surely, 2^66324964428 is an apocalyptic number.

It is an amenable number.

66324964428 is an abundant number, since it is smaller than the sum of its proper divisors (105643979572).

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

66324964428 is a wasteful number, since it uses less digits than its factorization.

66324964428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54771 (or 54763 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 54.

The spelling of 66324964428 in words is "sixty-six billion, three hundred twenty-four million, nine hundred sixty-four thousand, four hundred twenty-eight".