66146587682 has 32 divisors (see below), whose sum is σ = 122618976768. Its totient is φ = 26113291776.

The previous prime is 66146587679. The next prime is 66146587697. The reversal of 66146587682 is 28678564166.

It is a happy number.

It is a super-4 number, since 4×66146587682⁴ (a number of 44 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2945483 + ... + 2967854.

It is an arithmetic number, because the mean of its divisors is an integer number (3831843024).

Almost surely, 2^66146587682 is an apocalyptic number.

66146587682 is a deficient number, since it is larger than the sum of its proper divisors (56472389086).

66146587682 is a wasteful number, since it uses less digits than its factorization.

66146587682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5913410.

The product of its digits is 23224320, while the sum is 59.

The spelling of 66146587682 in words is "sixty-six billion, one hundred forty-six million, five hundred eighty-seven thousand, six hundred eighty-two".