66040133347600 has 60 divisors (see below), whose sum is σ = 160573003826256. Its totient is φ = 26097787623040.

The previous prime is 66040133347597. The next prime is 66040133347633. The reversal of 66040133347600 is 674333104066.

It is a super-2 number, since 2×66040133347600² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 994547122 + ... + 994613521.

Almost surely, 2^{66040133347600} is an apocalyptic number.

It is an amenable number.

66040133347600 is an abundant number, since it is smaller than the sum of its proper divisors (94532870478656).

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

66040133347600 is a wasteful number, since it uses less digits than its factorization.

66040133347600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989160744 (or 1989160733 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 43.

The spelling of 66040133347600 in words is "sixty-six trillion, forty billion, one hundred thirty-three million, three hundred forty-seven thousand, six hundred".