16550656505655 has 64 divisors (see below), whose sum is σ = 27021649904640. Its totient is φ = 8648321071104.

The previous prime is 16550656505653. The next prime is 16550656505687. The reversal of 16550656505655 is 55650565605561.

It is a happy number.

It is not a de Polignac number, because 16550656505655 - 2¹ = 16550656505653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16550656505653) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 224814862 + ... + 224888468.

It is an arithmetic number, because the mean of its divisors is an integer number (422213279760).

Almost surely, 2^{16550656505655} is an apocalyptic number.

16550656505655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16550656505655 is a deficient number, since it is larger than the sum of its proper divisors (10470993398985).

16550656505655 is a wasteful number, since it uses less digits than its factorization.

16550656505655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74888.

The product of its (nonzero) digits is 101250000, while the sum is 60.

The spelling of 16550656505655 in words is "sixteen trillion, five hundred fifty billion, six hundred fifty-six million, five hundred five thousand, six hundred fifty-five".