66126827212828 has 96 divisors (see below), whose sum is σ = 129440318515200. Its totient is φ = 29447664390144.

The previous prime is 66126827212757. The next prime is 66126827212877. The reversal of 66126827212828 is 82821272862166.

It is a super-3 number, since 3×66126827212828³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5415100 + ... + 12711292.

It is an arithmetic number, because the mean of its divisors is an integer number (1348336651200).

Almost surely, 2^{66126827212828} is an apocalyptic number.

It is an amenable number.

66126827212828 is a deficient number, since it is larger than the sum of its proper divisors (63313491302372).

66126827212828 is a wasteful number, since it uses less digits than its factorization.

66126827212828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7296371 (or 7296369 counting only the distinct ones).

The product of its digits is 24772608, while the sum is 61.

The spelling of 66126827212828 in words is "sixty-six trillion, one hundred twenty-six billion, eight hundred twenty-seven million, two hundred twelve thousand, eight hundred twenty-eight".