320706536488 has 64 divisors (see below), whose sum is σ = 680669256960. Its totient is φ = 140549223936.

The previous prime is 320706536471. The next prime is 320706536497. The reversal of 320706536488 is 884635607023.

It is a super-2 number, since 2×320706536488² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161620 + ... + 817027.

It is an arithmetic number, because the mean of its divisors is an integer number (10635457140).

Almost surely, 2^320706536488 is an apocalyptic number.

It is an amenable number.

320706536488 is an abundant number, since it is smaller than the sum of its proper divisors (359962720472).

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

320706536488 is a wasteful number, since it uses less digits than its factorization.

320706536488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978826 (or 978822 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 320706536488 in words is "three hundred twenty billion, seven hundred six million, five hundred thirty-six thousand, four hundred eighty-eight".