9168722144545 has 4 divisors (see below), whose sum is σ = 11002466573460. Its totient is φ = 7334977715632.

The previous prime is 9168722144537. The next prime is 9168722144623. The reversal of 9168722144545 is 5454412278619.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4824599071009 + 4344123073536 = 2196497^2 + 2084256^2 .

It is a cyclic number.

It is not a de Polignac number, because 9168722144545 - 2³ = 9168722144537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9168722144545.

It is an unprimeable number.

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, 916872214450 + ... + 916872214459.

It is an arithmetic number, because the mean of its divisors is an integer number (2750616643365).

Almost surely, 2^{9168722144545} is an apocalyptic number.

It is an amenable number.

9168722144545 is a deficient number, since it is larger than the sum of its proper divisors (1833744428915).

9168722144545 is a wasteful number, since it uses less digits than its factorization.

9168722144545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833744428914.

The product of its digits is 19353600, while the sum is 58.

The spelling of 9168722144545 in words is "nine trillion, one hundred sixty-eight billion, seven hundred twenty-two million, one hundred forty-four thousand, five hundred forty-five".