40555329792 has 144 divisors (see below), whose sum is σ = 113492527680. Its totient is φ = 12837888000.

The previous prime is 40555329767. The next prime is 40555329797. The reversal of 40555329792 is 29792355504.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40555329797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1343667 + ... + 1373517.

Almost surely, 2^40555329792 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 40555329792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56746263840).

40555329792 is an abundant number, since it is smaller than the sum of its proper divisors (72937197888).

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

40555329792 is a wasteful number, since it uses less digits than its factorization.

40555329792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29960 (or 29946 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 51.

The spelling of 40555329792 in words is "forty billion, five hundred fifty-five million, three hundred twenty-nine thousand, seven hundred ninety-two".