40400040365 has 16 divisors (see below), whose sum is σ = 48587251440. Its totient is φ = 32248627200.

The previous prime is 40400040361. The next prime is 40400040407. The reversal of 40400040365 is 56304000404.

It can be written as a sum of positive squares in 8 ways, for example, as 399240361 + 40000800004 = 19981^2 + 200002^2 .

It is not a de Polignac number, because 40400040365 - 2² = 40400040361 is a prime.

It is a super-2 number, since 2×40400040365² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400040361) 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, 10386341 + ... + 10390229.

It is an arithmetic number, because the mean of its divisors is an integer number (3036703215).

Almost surely, 2^40400040365 is an apocalyptic number.

It is an amenable number.

40400040365 is a deficient number, since it is larger than the sum of its proper divisors (8187211075).

40400040365 is a wasteful number, since it uses less digits than its factorization.

40400040365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7952.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 40400040365 its reverse (56304000404), we get a palindrome (96704040769).

The spelling of 40400040365 in words is "forty billion, four hundred million, forty thousand, three hundred sixty-five".