40385840488 has 192 divisors, whose sum is σ = 95175475200. Its totient is φ = 15692745600.

The previous prime is 40385840477. The next prime is 40385840491. The reversal of 40385840488 is 88404858304.

It is a happy number.

It is a super-2 number, since 2×40385840488² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129857853 + ... + 129858163.

It is an arithmetic number, because the mean of its divisors is an integer number (495705600).

Almost surely, 2^40385840488 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 40385840488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47587737600).

40385840488 is an abundant number, since it is smaller than the sum of its proper divisors (54789634712).

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

40385840488 is a wasteful number, since it uses less digits than its factorization.

40385840488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 3932160, while the sum is 52.

The spelling of 40385840488 in words is "forty billion, three hundred eighty-five million, eight hundred forty thousand, four hundred eighty-eight".