7228155665169 has 12 divisors (see below), whose sum is σ = 10440836513536. Its totient is φ = 4818693265272.

The previous prime is 7228155665167. The next prime is 7228155665183. The reversal of 7228155665169 is 9615665518227.

7228155665169 is a `hidden beast` number, since 7 + 2 + 2 + 8 + 1 + 5 + 566 + 5 + 1 + 69 = 666.

It is not a de Polignac number, because 7228155665169 - 2¹ = 7228155665167 is a prime.

It is a super-2 number, since 2×7228155665169² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7228155665167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5835457 + ... + 6964830.

Almost surely, 2^{7228155665169} is an apocalyptic number.

It is an amenable number.

7228155665169 is a deficient number, since it is larger than the sum of its proper divisors (3212680848367).

7228155665169 is a wasteful number, since it uses less digits than its factorization.

7228155665169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12863036 (or 12863033 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 63.

The spelling of 7228155665169 in words is "seven trillion, two hundred twenty-eight billion, one hundred fifty-five million, six hundred sixty-five thousand, one hundred sixty-nine".