16722359199855 has 48 divisors (see below), whose sum is σ = 29211802532640. Its totient is φ = 8849014689024.

The previous prime is 16722359199851. The next prime is 16722359199877. The reversal of 16722359199855 is 55899195322761.

16722359199855 is a `hidden beast` number, since 1 + 6 + 7 + 2 + 2 + 359 + 199 + 85 + 5 = 666.

It is not a de Polignac number, because 16722359199855 - 2² = 16722359199851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16722359199851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9422869 + ... + 11056001.

It is an arithmetic number, because the mean of its divisors is an integer number (608579219430).

Almost surely, 2^{16722359199855} is an apocalyptic number.

16722359199855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16722359199855 is a deficient number, since it is larger than the sum of its proper divisors (12489443332785).

16722359199855 is a wasteful number, since it uses less digits than its factorization.

16722359199855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634920 (or 1634917 counting only the distinct ones).

The product of its digits is 367416000, while the sum is 72.

The spelling of 16722359199855 in words is "sixteen trillion, seven hundred twenty-two billion, three hundred fifty-nine million, one hundred ninety-nine thousand, eight hundred fifty-five".