3128815940975 has 24 divisors (see below), whose sum is σ = 3885510739968. Its totient is φ = 2499326776800.

The previous prime is 3128815940941. The next prime is 3128815941011. The reversal of 3128815940975 is 5790495188213.

It is a de Polignac number, because none of the positive numbers 2^k-3128815940975 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55259930 + ... + 55316520.

It is an arithmetic number, because the mean of its divisors is an integer number (161896280832).

Almost surely, 2^{3128815940975} is an apocalyptic number.

3128815940975 is a deficient number, since it is larger than the sum of its proper divisors (756694798993).

3128815940975 is a wasteful number, since it uses less digits than its factorization.

3128815940975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59855 (or 59850 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 62.

The spelling of 3128815940975 in words is "three trillion, one hundred twenty-eight billion, eight hundred fifteen million, nine hundred forty thousand, nine hundred seventy-five".