66141620040123 has 12 divisors (see below), whose sum is σ = 95544001645248. Its totient is φ = 44091595191600.

The previous prime is 66141620040071. The next prime is 66141620040151. The reversal of 66141620040123 is 32104002614166.

66141620040123 is a `hidden beast` number, since 6 + 6 + 1 + 4 + 1 + 620 + 0 + 4 + 0 + 1 + 23 = 666.

It is not a de Polignac number, because 66141620040123 - 2⁴² = 61743573529019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66141620040193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234698728 + ... + 234980373.

It is an arithmetic number, because the mean of its divisors is an integer number (7962000137104).

Almost surely, 2^{66141620040123} is an apocalyptic number.

66141620040123 is a deficient number, since it is larger than the sum of its proper divisors (29402381605125).

66141620040123 is a wasteful number, since it uses less digits than its factorization.

66141620040123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469694754 (or 469694751 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

Adding to 66141620040123 its reverse (32104002614166), we get a palindrome (98245622654289).

The spelling of 66141620040123 in words is "sixty-six trillion, one hundred forty-one billion, six hundred twenty million, forty thousand, one hundred twenty-three".