320040206146 has 8 divisors (see below), whose sum is σ = 480981731724. Its totient is φ = 159712962240.

The previous prime is 320040206111. The next prime is 320040206153. The reversal of 320040206146 is 641602040023.

It can be written as a sum of positive squares in 2 ways, for example, as 266674124025 + 53366082121 = 516405^2 + 231011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153569115 + ... + 153571198.

Almost surely, 2^320040206146 is an apocalyptic number.

320040206146 is a deficient number, since it is larger than the sum of its proper divisors (160941525578).

320040206146 is a wasteful number, since it uses less digits than its factorization.

320040206146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307140836.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 320040206146 its reverse (641602040023), we get a palindrome (961642246169).

The spelling of 320040206146 in words is "three hundred twenty billion, forty million, two hundred six thousand, one hundred forty-six".