16506054545 has 8 divisors (see below), whose sum is σ = 20972398824. Its totient is φ = 12428088064.

The previous prime is 16506054533. The next prime is 16506054553. The reversal of 16506054545 is 54545060561.

It can be written as a sum of positive squares in 4 ways, for example, as 3078807169 + 13427247376 = 55487^2 + 115876^2 .

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 16506054545 - 2⁸ = 16506054289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97094354 + ... + 97094523.

It is an arithmetic number, because the mean of its divisors is an integer number (2621549853).

Almost surely, 2^16506054545 is an apocalyptic number.

It is an amenable number.

16506054545 is a deficient number, since it is larger than the sum of its proper divisors (4466344279).

16506054545 is a wasteful number, since it uses less digits than its factorization.

16506054545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194188899.

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 16506054545 in words is "sixteen billion, five hundred six million, fifty-four thousand, five hundred forty-five".