320205240726016 has 160 divisors (see below), whose sum is σ = 678949108725888. Its totient is φ = 150344955002880.

The previous prime is 320205240725987. The next prime is 320205240726031. The reversal of 320205240726016 is 610627042502023.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 320205240726016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7152045711 + ... + 7152090481.

Almost surely, 2^{320205240726016} 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 320205240726016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339474554362944).

320205240726016 is an abundant number, since it is smaller than the sum of its proper divisors (358743867999872).

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

320205240726016 is a wasteful number, since it uses less digits than its factorization.

320205240726016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46642 (or 46626 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 320205240726016 in words is "three hundred twenty trillion, two hundred five billion, two hundred forty million, seven hundred twenty-six thousand, sixteen".