40235106638 has 16 divisors (see below), whose sum is σ = 60928665264. Its totient is φ = 19925625600.

The previous prime is 40235106631. The next prime is 40235106697. The reversal of 40235106638 is 83660153204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40235106631) 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, 1290206 + ... + 1321022.

It is an arithmetic number, because the mean of its divisors is an integer number (3808041579).

Almost surely, 2^40235106638 is an apocalyptic number.

40235106638 is a deficient number, since it is larger than the sum of its proper divisors (20693558626).

40235106638 is a wasteful number, since it uses less digits than its factorization.

40235106638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37027.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 40235106638 in words is "forty billion, two hundred thirty-five million, one hundred six thousand, six hundred thirty-eight".