16554471054425 has 12 divisors (see below), whose sum is σ = 20551496927676. Its totient is φ = 13228123411200.

The previous prime is 16554471054391. The next prime is 16554471054461. The reversal of 16554471054425 is 52445017445561.

It can be written as a sum of positive squares in 6 ways, for example, as 3063564092416 + 13490906962009 = 1750304^2 + 3672997^2 .

It is not a de Polignac number, because 16554471054425 - 2⁸ = 16554471054169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386313956 + ... + 386356805.

It is an arithmetic number, because the mean of its divisors is an integer number (1712624743973).

Almost surely, 2^{16554471054425} is an apocalyptic number.

It is an amenable number.

16554471054425 is a deficient number, since it is larger than the sum of its proper divisors (3997025873251).

16554471054425 is an equidigital number, since it uses as much as digits as its factorization.

16554471054425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772671628 (or 772671623 counting only the distinct ones).

The product of its (nonzero) digits is 13440000, while the sum is 53.

Adding to 16554471054425 its reverse (52445017445561), we get a palindrome (68999488499986).

The spelling of 16554471054425 in words is "sixteen trillion, five hundred fifty-four billion, four hundred seventy-one million, fifty-four thousand, four hundred twenty-five".