2199023255551 has 4 divisors (see below), whose sum is σ = 2199187780272. Its totient is φ = 2198858730832.

The previous prime is 2199023255531. The next prime is 2199023255579. The reversal of 2199023255551 is 1555523209912.

2199023255551 is nontrivially palindromic in base 2.

It is a Cunningham number, because it is equal to 2⁴¹-1.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2199023255551 - 2³¹ = 2196875771903 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

2199023255551 is a nontrivial repdigit in base 2.

It is a plaindrome in base 2, base 4, base 8 and base 16.

It is a nialpdrome in base 2.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 2199023255495 and 2199023255504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199023255521) by changing a digit.

It is a nontrivial repunit in base 2.

It is a pernicious number, because its binary representation contains a prime number (41) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82242310 + ... + 82269043.

It is an arithmetic number, because the mean of its divisors is an integer number (549796945068).

It is a Poulet number, since it divides 2^{2199023255550}-1.

Almost surely, 2^{2199023255551} is an apocalyptic number.

2199023255551 is a deficient number, since it is larger than the sum of its proper divisors (164524721).

2199023255551 is a wasteful number, since it uses less digits than its factorization.

2199023255551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164524720.

The product of its (nonzero) digits is 1215000, while the sum is 49.

The spelling of 2199023255551 in words is "two trillion, one hundred ninety-nine billion, twenty-three million, two hundred fifty-five thousand, five hundred fifty-one".