16777325563 has 4 divisors (see below), whose sum is σ = 16777854520. Its totient is φ = 16776796608.

The previous prime is 16777325561. The next prime is 16777325567. The reversal of 16777325563 is 36552377761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36552377761 = 15647 ⋅2336063.

It is a cyclic number.

It is not a de Polignac number, because 16777325563 - 2¹ = 16777325561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16777325563.

It is not an unprimeable number, because it can be changed into a prime (16777325561) 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 3 ways as a sum of consecutive naturals, for example, 213645 + ... + 281422.

It is an arithmetic number, because the mean of its divisors is an integer number (4194463630).

Almost surely, 2^16777325563 is an apocalyptic number.

16777325563 is a deficient number, since it is larger than the sum of its proper divisors (528957).

16777325563 is an equidigital number, since it uses as much as digits as its factorization.

16777325563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528956.

The product of its digits is 5556600, while the sum is 52.

The spelling of 16777325563 in words is "sixteen billion, seven hundred seventy-seven million, three hundred twenty-five thousand, five hundred sixty-three".