320305233215445 has 16 divisors (see below), whose sum is σ = 512613645394752. Its totient is φ = 170787700298240.

The previous prime is 320305233215393. The next prime is 320305233215453. The reversal of 320305233215445 is 544512332503023.

It is not a de Polignac number, because 320305233215445 - 2²⁰ = 320305232166869 is a prime.

It is a super-2 number, since 2×320305233215445² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320305233215397 and 320305233215406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2609775132 + ... + 2609897861.

It is an arithmetic number, because the mean of its divisors is an integer number (32038352837172).

Almost surely, 2^{320305233215445} is an apocalyptic number.

It is an amenable number.

320305233215445 is a deficient number, since it is larger than the sum of its proper divisors (192308412179307).

320305233215445 is a wasteful number, since it uses less digits than its factorization.

320305233215445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219677092.

The product of its (nonzero) digits is 1296000, while the sum is 42.

Adding to 320305233215445 its reverse (544512332503023), we get a palindrome (864817565718468).

The spelling of 320305233215445 in words is "three hundred twenty trillion, three hundred five billion, two hundred thirty-three million, two hundred fifteen thousand, four hundred forty-five".