6784128172131 has 16 divisors (see below), whose sum is σ = 9290490047904. Its totient is φ = 4400272698624.

The previous prime is 6784128172121. The next prime is 6784128172183. The reversal of 6784128172131 is 1312718214876.

It is not a de Polignac number, because 6784128172131 - 2²⁷ = 6783993954403 is a prime.

It is a super-2 number, since 2×6784128172131² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6784128172121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344581 + ... + 3699593.

It is an arithmetic number, because the mean of its divisors is an integer number (580655627994).

Almost surely, 2^{6784128172131} is an apocalyptic number.

6784128172131 is a deficient number, since it is larger than the sum of its proper divisors (2506361875773).

6784128172131 is a wasteful number, since it uses less digits than its factorization.

6784128172131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373270.

The product of its digits is 903168, while the sum is 51.

The spelling of 6784128172131 in words is "six trillion, seven hundred eighty-four billion, one hundred twenty-eight million, one hundred seventy-two thousand, one hundred thirty-one".