40365797808 has 120 divisors (see below), whose sum is σ = 121442941440. Its totient is φ = 11519813760.

The previous prime is 40365797807. The next prime is 40365797839. The reversal of 40365797808 is 80879756304.

It is not an unprimeable number, because it can be changed into a prime (40365797807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2133253 + ... + 2152091.

It is an arithmetic number, because the mean of its divisors is an integer number (1012024512).

Almost surely, 2^40365797808 is an apocalyptic number.

40365797808 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 40365797808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60721470720).

40365797808 is an abundant number, since it is smaller than the sum of its proper divisors (81077143632).

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

40365797808 is a wasteful number, since it uses less digits than its factorization.

40365797808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19775 (or 19762 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 40365797808 in words is "forty billion, three hundred sixty-five million, seven hundred ninety-seven thousand, eight hundred eight".