55000166610661 has 8 divisors (see below), whose sum is σ = 55720381679424. Its totient is φ = 54281322076800.

The previous prime is 55000166610659. The next prime is 55000166610703. The reversal of 55000166610661 is 16601666100055.

55000166610661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55000166610661 - 2¹ = 55000166610659 is a prime.

It is a super-2 number, since 2×55000166610661² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55000166610061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342552940 + ... + 342713461.

It is an arithmetic number, because the mean of its divisors is an integer number (6965047709928).

Almost surely, 2^{55000166610661} is an apocalyptic number.

It is an amenable number.

55000166610661 is a deficient number, since it is larger than the sum of its proper divisors (720215068763).

55000166610661 is an equidigital number, since it uses as much as digits as its factorization.

55000166610661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685267451.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 55000166610661 in words is "fifty-five trillion, one hundred sixty-six million, six hundred ten thousand, six hundred sixty-one".