40405505343135 has 16 divisors (see below), whose sum is σ = 65142310907520. Its totient is φ = 21385102063520.

The previous prime is 40405505343131. The next prime is 40405505343157. The reversal of 40405505343135 is 53134350550404.

It is a happy number.

It is not a de Polignac number, because 40405505343135 - 2² = 40405505343131 is a prime.

It is a super-2 number, since 2×40405505343135² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40405505343131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10281297105 + ... + 10281301034.

It is an arithmetic number, because the mean of its divisors is an integer number (4071394431720).

Almost surely, 2^{40405505343135} is an apocalyptic number.

40405505343135 is a deficient number, since it is larger than the sum of its proper divisors (24736805564385).

40405505343135 is a wasteful number, since it uses less digits than its factorization.

40405505343135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20562598278.

The product of its (nonzero) digits is 1080000, while the sum is 42.

Adding to 40405505343135 its reverse (53134350550404), we get a palindrome (93539855893539).

The spelling of 40405505343135 in words is "forty trillion, four hundred five billion, five hundred five million, three hundred forty-three thousand, one hundred thirty-five".