40365640040 has 64 divisors (see below), whose sum is σ = 99349666560. Its totient is φ = 14638360320.

The previous prime is 40365640039. The next prime is 40365640151. The reversal of 40365640040 is 4004656304.

It is a junction number, because it is equal to n+sod(n) for n = 40365639979 and 40365640006.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 36494 + ... + 286466.

It is an arithmetic number, because the mean of its divisors is an integer number (1552338540).

Almost surely, 2^40365640040 is an apocalyptic number.

40365640040 is a gapful number since it is divisible by the number (40) 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 40365640040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49674833280).

40365640040 is an abundant number, since it is smaller than the sum of its proper divisors (58984026520).

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

40365640040 is a wasteful number, since it uses less digits than its factorization.

40365640040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250362 (or 250358 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The spelling of 40365640040 in words is "forty billion, three hundred sixty-five million, six hundred forty thousand, forty".