54005212566166 has 4 divisors (see below), whose sum is σ = 81007818849252. Its totient is φ = 27002606283082.

The previous prime is 54005212566121. The next prime is 54005212566167. The reversal of 54005212566166 is 66166521250045.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54005212566167) 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 as a sum of consecutive naturals, namely, 13501303141540 + ... + 13501303141543.

It is an arithmetic number, because the mean of its divisors is an integer number (20251954712313).

Almost surely, 2^{54005212566166} is an apocalyptic number.

54005212566166 is a deficient number, since it is larger than the sum of its proper divisors (27002606283086).

54005212566166 is a wasteful number, since it uses less digits than its factorization.

54005212566166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27002606283085.

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 54005212566166 in words is "fifty-four trillion, five billion, two hundred twelve million, five hundred sixty-six thousand, one hundred sixty-six".