40816139568 has 160 divisors (see below), whose sum is σ = 112692787200. Its totient is φ = 12693086208.

The previous prime is 40816139563. The next prime is 40816139593. The reversal of 40816139568 is 86593161804.

It is a self number, because there is not a number n which added to its sum of digits gives 40816139568.

It is not an unprimeable number, because it can be changed into a prime (40816139563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19726438 + ... + 19728506.

It is an arithmetic number, because the mean of its divisors is an integer number (704329920).

Almost surely, 2^40816139568 is an apocalyptic number.

40816139568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40816139568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56346393600).

40816139568 is an abundant number, since it is smaller than the sum of its proper divisors (71876647632).

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

40816139568 is a wasteful number, since it uses less digits than its factorization.

40816139568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419 (or 2413 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 40816139568 in words is "forty billion, eight hundred sixteen million, one hundred thirty-nine thousand, five hundred sixty-eight".