40646259808 has 384 divisors, whose sum is σ = 109552988160. Its totient is φ = 14370048000.

The previous prime is 40646259799. The next prime is 40646259877. The reversal of 40646259808 is 80895264604.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 122798203 + ... + 122798533.

It is an arithmetic number, because the mean of its divisors is an integer number (285294240).

Almost surely, 2^40646259808 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 40646259808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54776494080).

40646259808 is an abundant number, since it is smaller than the sum of its proper divisors (68906728352).

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

40646259808 is a wasteful number, since it uses less digits than its factorization.

40646259808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 40646259808 in words is "forty billion, six hundred forty-six million, two hundred fifty-nine thousand, eight hundred eight".