55621182166 has 32 divisors (see below), whose sum is σ = 92525685120. Its totient is φ = 24864364800.

The previous prime is 55621182137. The next prime is 55621182191. The reversal of 55621182166 is 66128112655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 881926 + ... + 942886.

It is an arithmetic number, because the mean of its divisors is an integer number (2891427660).

Almost surely, 2^55621182166 is an apocalyptic number.

55621182166 is a deficient number, since it is larger than the sum of its proper divisors (36904502954).

55621182166 is a wasteful number, since it uses less digits than its factorization.

55621182166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61660.

The product of its digits is 172800, while the sum is 43.

The spelling of 55621182166 in words is "fifty-five billion, six hundred twenty-one million, one hundred eighty-two thousand, one hundred sixty-six".