66474411242138 has 8 divisors (see below), whose sum is σ = 99711665353440. Its totient is φ = 33237189457660.

The previous prime is 66474411242053. The next prime is 66474411242153. The reversal of 66474411242138 is 83124211447466.

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

It is a super-2 number, since 2×66474411242138² (a number of 28 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 66474411242138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2036528 + ... + 11708811.

It is an arithmetic number, because the mean of its divisors is an integer number (12463958169180).

Almost surely, 2^{66474411242138} is an apocalyptic number.

66474411242138 is a deficient number, since it is larger than the sum of its proper divisors (33237254111302).

66474411242138 is a wasteful number, since it uses less digits than its factorization.

66474411242138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16163412.

The product of its digits is 6193152, while the sum is 53.

The spelling of 66474411242138 in words is "sixty-six trillion, four hundred seventy-four billion, four hundred eleven million, two hundred forty-two thousand, one hundred thirty-eight".