16550817055 has 4 divisors (see below), whose sum is σ = 19860980472. Its totient is φ = 13240653640.

The previous prime is 16550817011. The next prime is 16550817061. The reversal of 16550817055 is 55071805561.

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

It is not a de Polignac number, because 16550817055 - 2¹¹ = 16550815007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1655081701 + ... + 1655081710.

It is an arithmetic number, because the mean of its divisors is an integer number (4965245118).

Almost surely, 2^16550817055 is an apocalyptic number.

16550817055 is a deficient number, since it is larger than the sum of its proper divisors (3310163417).

16550817055 is an equidigital number, since it uses as much as digits as its factorization.

16550817055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310163416.

The product of its (nonzero) digits is 210000, while the sum is 43.

It can be divided in two parts, 165508170 and 55, that added together give a square (165508225 = 12865²).

The spelling of 16550817055 in words is "sixteen billion, five hundred fifty million, eight hundred seventeen thousand, fifty-five".