40340352634 has 16 divisors (see below), whose sum is σ = 60885419400. Its totient is φ = 20045588544.

The previous prime is 40340352631. The next prime is 40340352641. The reversal of 40340352634 is 43625304304.

It can be written as a sum of positive squares in 4 ways, for example, as 12633085609 + 27707267025 = 112397^2 + 166455^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40340352634.

It is not an unprimeable number, because it can be changed into a prime (40340352631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121912 + ... + 309100.

Almost surely, 2^40340352634 is an apocalyptic number.

40340352634 is a deficient number, since it is larger than the sum of its proper divisors (20545066766).

40340352634 is a wasteful number, since it uses less digits than its factorization.

40340352634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187857.

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 40340352634 its reverse (43625304304), we get a palindrome (83965656938).

The spelling of 40340352634 in words is "forty billion, three hundred forty million, three hundred fifty-two thousand, six hundred thirty-four".