40568709456 has 120 divisors (see below), whose sum is σ = 125350164576. Its totient is φ = 12145393920.

The previous prime is 40568709451. The next prime is 40568709463. The reversal of 40568709456 is 65490786504.

40568709456 is a `hidden beast` number, since 4 + 0 + 568 + 70 + 9 + 4 + 5 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40568709451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22815 + ... + 285758.

Almost surely, 2^40568709456 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 40568709456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62675082288).

40568709456 is an abundant number, since it is smaller than the sum of its proper divisors (84781455120).

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

40568709456 is a wasteful number, since it uses less digits than its factorization.

40568709456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308681 (or 308672 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 40568709456 in words is "forty billion, five hundred sixty-eight million, seven hundred nine thousand, four hundred fifty-six".