40036400365 has 8 divisors (see below), whose sum is σ = 51739348248. Its totient is φ = 29565341760.

The previous prime is 40036400353. The next prime is 40036400389. The reversal of 40036400365 is 56300463004.

It can be written as a sum of positive squares in 4 ways, for example, as 1166700649 + 38869699716 = 34157^2 + 197154^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40036400365 - 2⁷ = 40036400237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307972246 + ... + 307972375.

It is an arithmetic number, because the mean of its divisors is an integer number (6467418531).

Almost surely, 2^40036400365 is an apocalyptic number.

It is an amenable number.

40036400365 is a deficient number, since it is larger than the sum of its proper divisors (11702947883).

40036400365 is a wasteful number, since it uses less digits than its factorization.

40036400365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615944639.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 40036400365 its reverse (56300463004), we get a palindrome (96336863369).

The spelling of 40036400365 in words is "forty billion, thirty-six million, four hundred thousand, three hundred sixty-five".