3128940372135 has 64 divisors (see below), whose sum is σ = 5346410323968. Its totient is φ = 1559070948864.

The previous prime is 3128940372109. The next prime is 3128940372149. The reversal of 3128940372135 is 5312730498213.

It is not a de Polignac number, because 3128940372135 - 2²¹ = 3128938274983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3693877 + ... + 4461233.

It is an arithmetic number, because the mean of its divisors is an integer number (83537661312).

Almost surely, 2^{3128940372135} is an apocalyptic number.

3128940372135 is a deficient number, since it is larger than the sum of its proper divisors (2217469951833).

3128940372135 is a wasteful number, since it uses less digits than its factorization.

3128940372135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767664.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 3128940372135 in words is "three trillion, one hundred twenty-eight billion, nine hundred forty million, three hundred seventy-two thousand, one hundred thirty-five".