16550556056663 has 8 divisors (see below), whose sum is σ = 16957040521680. Its totient is φ = 16144205513920.

The previous prime is 16550556056621. The next prime is 16550556056669. The reversal of 16550556056663 is 36665065505561.

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 16550556056663 - 2⁶ = 16550556056599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16550556056669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33230345 + ... + 33724722.

It is an arithmetic number, because the mean of its divisors is an integer number (2119630065210).

Almost surely, 2^{16550556056663} is an apocalyptic number.

16550556056663 is a deficient number, since it is larger than the sum of its proper divisors (406484465017).

16550556056663 is an equidigital number, since it uses as much as digits as its factorization.

16550556056663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66961137.

The product of its (nonzero) digits is 72900000, while the sum is 59.

The spelling of 16550556056663 in words is "sixteen trillion, five hundred fifty billion, five hundred fifty-six million, fifty-six thousand, six hundred sixty-three".