320040206145 has 24 divisors (see below), whose sum is σ = 605166936192. Its totient is φ = 155171008800.

The previous prime is 320040206111. The next prime is 320040206153. The reversal of 320040206145 is 541602040023.

320040206145 is a `hidden beast` number, since 3 + 2 + 0 + 0 + 40 + 2 + 0 + 614 + 5 = 666.

It is not a de Polignac number, because 320040206145 - 2¹² = 320040202049 is a prime.

It is a super-2 number, since 2×320040206145² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323272441 + ... + 323273430.

It is an arithmetic number, because the mean of its divisors is an integer number (25215289008).

Almost surely, 2^320040206145 is an apocalyptic number.

It is an amenable number.

320040206145 is a deficient number, since it is larger than the sum of its proper divisors (285126730047).

320040206145 is a wasteful number, since it uses less digits than its factorization.

320040206145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646545893 (or 646545890 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 320040206145 its reverse (541602040023), we get a palindrome (861642246168).

The spelling of 320040206145 in words is "three hundred twenty billion, forty million, two hundred six thousand, one hundred forty-five".