28666366682142 has 32 divisors (see below), whose sum is σ = 65855728553472. Its totient is φ = 8148814892064.

The previous prime is 28666366682141. The next prime is 28666366682171. The reversal of 28666366682142 is 24128666366682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28666366682141) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1732307818 + ... + 1732324365.

It is an arithmetic number, because the mean of its divisors is an integer number (2057991517296).

Almost surely, 2^{28666366682142} is an apocalyptic number.

28666366682142 is an abundant number, since it is smaller than the sum of its proper divisors (37189361871330).

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

28666366682142 is a wasteful number, since it uses less digits than its factorization.

28666366682142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464632392.

The product of its digits is 286654464, while the sum is 66.

The spelling of 28666366682142 in words is "twenty-eight trillion, six hundred sixty-six billion, three hundred sixty-six million, six hundred eighty-two thousand, one hundred forty-two".