4040334720656 has 160 divisors (see below), whose sum is σ = 8973899383680. Its totient is φ = 1746836582400.

The previous prime is 4040334720623. The next prime is 4040334720673. The reversal of 4040334720656 is 6560274330404.

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, 145463186 + ... + 145490958.

It is an arithmetic number, because the mean of its divisors is an integer number (56086871148).

Almost surely, 2^{4040334720656} 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 4040334720656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4486949691840).

4040334720656 is an abundant number, since it is smaller than the sum of its proper divisors (4933564663024).

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

4040334720656 is a wasteful number, since it uses less digits than its factorization.

4040334720656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28225 (or 28219 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 44.

The spelling of 4040334720656 in words is "four trillion, forty billion, three hundred thirty-four million, seven hundred twenty thousand, six hundred fifty-six".