321111145788445 has 64 divisors (see below), whose sum is σ = 409635380183040. Its totient is φ = 241146857952000.

The previous prime is 321111145788437. The next prime is 321111145788479. The reversal of 321111145788445 is 544887541111123.

It is a happy number.

It is not a de Polignac number, because 321111145788445 - 2³ = 321111145788437 is a prime.

It is a super-2 number, since 2×321111145788445² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1880936640 + ... + 1881107350.

It is an arithmetic number, because the mean of its divisors is an integer number (6400552815360).

Almost surely, 2^{321111145788445} is an apocalyptic number.

It is an amenable number.

321111145788445 is a deficient number, since it is larger than the sum of its proper divisors (88524234394595).

321111145788445 is a wasteful number, since it uses less digits than its factorization.

321111145788445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172066.

The product of its digits is 4300800, while the sum is 55.

Adding to 321111145788445 its reverse (544887541111123), we get a palindrome (865998686899568).

The spelling of 321111145788445 in words is "three hundred twenty-one trillion, one hundred eleven billion, one hundred forty-five million, seven hundred eighty-eight thousand, four hundred forty-five".