320051626540 has 12 divisors (see below), whose sum is σ = 672108415776. Its totient is φ = 128020650608.

The previous prime is 320051626481. The next prime is 320051626547. The reversal of 320051626540 is 45626150023.

It is a junction number, because it is equal to n+sod(n) for n = 320051626496 and 320051626505.

It is not an unprimeable number, because it can be changed into a prime (320051626547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8001290644 + ... + 8001290683.

It is an arithmetic number, because the mean of its divisors is an integer number (56009034648).

Almost surely, 2^320051626540 is an apocalyptic number.

It is an amenable number.

320051626540 is an abundant number, since it is smaller than the sum of its proper divisors (352056789236).

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

320051626540 is a wasteful number, since it uses less digits than its factorization.

320051626540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16002581336 (or 16002581334 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 320051626540 its reverse (45626150023), we get a palindrome (365677776563).

The spelling of 320051626540 in words is "three hundred twenty billion, fifty-one million, six hundred twenty-six thousand, five hundred forty".