66284318944 has 48 divisors (see below), whose sum is σ = 130920714288. Its totient is φ = 33034770432.

The previous prime is 66284318939. The next prime is 66284318957. The reversal of 66284318944 is 44981348266.

It is a super-2 number, since 2×66284318944² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24759334 + ... + 24762010.

It is an arithmetic number, because the mean of its divisors is an integer number (2727514881).

Almost surely, 2^66284318944 is an apocalyptic number.

It is an amenable number.

66284318944 is a deficient number, since it is larger than the sum of its proper divisors (64636395344).

66284318944 is a wasteful number, since it uses less digits than its factorization.

66284318944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4907 (or 4899 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 55.

The spelling of 66284318944 in words is "sixty-six billion, two hundred eighty-four million, three hundred eighteen thousand, nine hundred forty-four".