320231541606536 has 128 divisors (see below), whose sum is σ = 723803660697600. Its totient is φ = 129860021491200.

The previous prime is 320231541606527. The next prime is 320231541606551. The reversal of 320231541606536 is 635606145132023.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43037996 + ... + 49927268.

It is an arithmetic number, because the mean of its divisors is an integer number (5654716099200).

Almost surely, 2^{320231541606536} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320231541606536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361901830348800).

320231541606536 is an abundant number, since it is smaller than the sum of its proper divisors (403572119091064).

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

320231541606536 is a wasteful number, since it uses less digits than its factorization.

320231541606536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6889699 (or 6889695 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 47.

Adding to 320231541606536 its reverse (635606145132023), we get a palindrome (955837686738559).

The spelling of 320231541606536 in words is "three hundred twenty trillion, two hundred thirty-one billion, five hundred forty-one million, six hundred six thousand, five hundred thirty-six".