320341534204520 has 32 divisors (see below), whose sum is σ = 720768967530120. Its totient is φ = 128136522024960.

The previous prime is 320341534204493. The next prime is 320341534204543. The reversal of 320341534204520 is 25402435143023.

It can be written as a sum of positive squares in 4 ways, for example, as 259293533528836 + 61048000675684 = 16102594^2 + 7813322^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95229680 + ... + 98536160.

Almost surely, 2^{320341534204520} is an apocalyptic number.

It is an amenable number.

320341534204520 is an abundant number, since it is smaller than the sum of its proper divisors (400427433325600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320341534204520 is a wasteful number, since it uses less digits than its factorization.

320341534204520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5728565 (or 5728561 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 320341534204520 its reverse (25402435143023), we get a palindrome (345743969347543).

The spelling of 320341534204520 in words is "three hundred twenty trillion, three hundred forty-one billion, five hundred thirty-four million, two hundred four thousand, five hundred twenty".