66667243315424 has 48 divisors (see below), whose sum is σ = 132225031864800. Its totient is φ = 33087052185600.

The previous prime is 66667243315403. The next prime is 66667243315481. The reversal of 66667243315424 is 42451334276666.

It is a happy number.

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, 9247652 + ... + 14793699.

It is an arithmetic number, because the mean of its divisors is an integer number (2754688163850).

Almost surely, 2^{66667243315424} is an apocalyptic number.

It is an amenable number.

66667243315424 is a deficient number, since it is larger than the sum of its proper divisors (65557788549376).

66667243315424 is a wasteful number, since it uses less digits than its factorization.

66667243315424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24042003 (or 24041995 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 59.

The spelling of 66667243315424 in words is "sixty-six trillion, six hundred sixty-seven billion, two hundred forty-three million, three hundred fifteen thousand, four hundred twenty-four".