40365115544 has 64 divisors (see below), whose sum is σ = 84435220800. Its totient is φ = 17962430976.

The previous prime is 40365115541. The next prime is 40365115547. The reversal of 40365115544 is 44551156304.

It is an interprime number because it is at equal distance from previous prime (40365115541) and next prime (40365115547).

It is a junction number, because it is equal to n+sod(n) for n = 40365115498 and 40365115507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40365115541) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2231882 + ... + 2249894.

It is an arithmetic number, because the mean of its divisors is an integer number (1319300325).

Almost surely, 2^40365115544 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 40365115544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42217610400).

40365115544 is an abundant number, since it is smaller than the sum of its proper divisors (44070105256).

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

40365115544 is a wasteful number, since it uses less digits than its factorization.

40365115544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18804 (or 18800 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 40365115544 in words is "forty billion, three hundred sixty-five million, one hundred fifteen thousand, five hundred forty-four".