55160166549991 has 8 divisors (see below), whose sum is σ = 55859062790720. Its totient is φ = 54461286966528.

The previous prime is 55160166549989. The next prime is 55160166550043. The reversal of 55160166549991 is 19994566106155.

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 55160166549991 - 2¹ = 55160166549989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55160166540991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2569135 + ... + 10812991.

It is an arithmetic number, because the mean of its divisors is an integer number (6982382848840).

Almost surely, 2^{55160166549991} is an apocalyptic number.

55160166549991 is a deficient number, since it is larger than the sum of its proper divisors (698896240729).

55160166549991 is an equidigital number, since it uses as much as digits as its factorization.

55160166549991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8328633.

The product of its (nonzero) digits is 78732000, while the sum is 67.

The spelling of 55160166549991 in words is "fifty-five trillion, one hundred sixty billion, one hundred sixty-six million, five hundred forty-nine thousand, nine hundred ninety-one".