55166561606602 has 4 divisors (see below), whose sum is σ = 82749842409906. Its totient is φ = 27583280803300.

The previous prime is 55166561606567. The next prime is 55166561606623. The reversal of 55166561606602 is 20660616566155.

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

It can be written as a sum of positive squares in only one way, i.e., 28244877497281 + 26921684109321 = 5314591^2 + 5188611^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13791640401649 + ... + 13791640401652.

Almost surely, 2^{55166561606602} is an apocalyptic number.

55166561606602 is a deficient number, since it is larger than the sum of its proper divisors (27583280803304).

55166561606602 is a wasteful number, since it uses less digits than its factorization.

55166561606602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27583280803303.

The product of its (nonzero) digits is 11664000, while the sum is 55.

The spelling of 55166561606602 in words is "fifty-five trillion, one hundred sixty-six billion, five hundred sixty-one million, six hundred six thousand, six hundred two".