66040646284882 has 16 divisors (see below), whose sum is σ = 105446330560800. Its totient is φ = 30930923628000.

The previous prime is 66040646284849. The next prime is 66040646284889. The reversal of 66040646284882 is 28848264604066.

It is a happy number.

It is a super-2 number, since 2×66040646284882² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66040646284889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9763545744 + ... + 9763552507.

It is an arithmetic number, because the mean of its divisors is an integer number (6590395660050).

Almost surely, 2^{66040646284882} is an apocalyptic number.

66040646284882 is a deficient number, since it is larger than the sum of its proper divisors (39405684275918).

66040646284882 is a wasteful number, since it uses less digits than its factorization.

66040646284882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19527098361.

The product of its (nonzero) digits is 169869312, while the sum is 64.

The spelling of 66040646284882 in words is "sixty-six trillion, forty billion, six hundred forty-six million, two hundred eighty-four thousand, eight hundred eighty-two".