40381613568 has 60 divisors (see below), whose sum is σ = 116544084228. Its totient is φ = 13460536320.

The previous prime is 40381613563. The next prime is 40381613579. The reversal of 40381613568 is 86531618304.

40381613568 is a `hidden beast` number, since 4 + 0 + 3 + 81 + 6 + 1 + 3 + 568 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40381613563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4377078 + ... + 4386293.

Almost surely, 2^40381613568 is an apocalyptic number.

40381613568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40381613568 is an abundant number, since it is smaller than the sum of its proper divisors (76162470660).

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

40381613568 is an equidigital number, since it uses as much as digits as its factorization.

40381613568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8763395 (or 8763376 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 40381613568 in words is "forty billion, three hundred eighty-one million, six hundred thirteen thousand, five hundred sixty-eight".