3936638043535 has 16 divisors (see below), whose sum is σ = 4901882314752. Its totient is φ = 3031763104800.

The previous prime is 3936638043451. The next prime is 3936638043619. The reversal of 3936638043535 is 5353408366393.

3936638043535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3936638043451) and next prime (3936638043619).

It is not a de Polignac number, because 3936638043535 - 2⁴¹ = 1737614787983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3936638043535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66456429 + ... + 66515638.

It is an arithmetic number, because the mean of its divisors is an integer number (306367644672).

Almost surely, 2^{3936638043535} is an apocalyptic number.

3936638043535 is a deficient number, since it is larger than the sum of its proper divisors (965244271217).

3936638043535 is a wasteful number, since it uses less digits than its factorization.

3936638043535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132972294.

The product of its (nonzero) digits is 62985600, while the sum is 58.

The spelling of 3936638043535 in words is "three trillion, nine hundred thirty-six billion, six hundred thirty-eight million, forty-three thousand, five hundred thirty-five".