16505044355 has 16 divisors (see below), whose sum is σ = 21007641600. Its totient is φ = 12413587680.

The previous prime is 16505044331. The next prime is 16505044403. The reversal of 16505044355 is 55344050561.

It is not a de Polignac number, because 16505044355 - 2⁶ = 16505044291 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650675 + ... + 675564.

It is an arithmetic number, because the mean of its divisors is an integer number (1312977600).

Almost surely, 2^16505044355 is an apocalyptic number.

16505044355 is a deficient number, since it is larger than the sum of its proper divisors (4502597245).

16505044355 is a wasteful number, since it uses less digits than its factorization.

16505044355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326394.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 16505044355 in words is "sixteen billion, five hundred five million, forty-four thousand, three hundred fifty-five".