6544426404131 has 32 divisors (see below), whose sum is σ = 8242846848000. Its totient is φ = 5047360848000.

The previous prime is 6544426404121. The next prime is 6544426404151. The reversal of 6544426404131 is 1314046244456.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6544426404131 - 2⁶ = 6544426404067 is a prime.

It is a super-2 number, since 2×6544426404131² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6544426404121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23182925 + ... + 23463521.

It is an arithmetic number, because the mean of its divisors is an integer number (257588964000).

Almost surely, 2^{6544426404131} is an apocalyptic number.

6544426404131 is a deficient number, since it is larger than the sum of its proper divisors (1698420443869).

6544426404131 is a wasteful number, since it uses less digits than its factorization.

6544426404131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283715.

The product of its (nonzero) digits is 1105920, while the sum is 44.

The spelling of 6544426404131 in words is "six trillion, five hundred forty-four billion, four hundred twenty-six million, four hundred four thousand, one hundred thirty-one".