5144695446181 has 4 divisors (see below), whose sum is σ = 5447324590092. Its totient is φ = 4842066302272.

The previous prime is 5144695446173. The next prime is 5144695446211. The reversal of 5144695446181 is 1816445964415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3919445698081 + 1225249748100 = 1979759^2 + 1106910^2 .

It is a cyclic number.

It is not a de Polignac number, because 5144695446181 - 2³ = 5144695446173 is a prime.

It is a super-2 number, since 2×5144695446181² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5144695446101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151314571930 + ... + 151314571963.

It is an arithmetic number, because the mean of its divisors is an integer number (1361831147523).

Almost surely, 2^{5144695446181} is an apocalyptic number.

It is an amenable number.

5144695446181 is a deficient number, since it is larger than the sum of its proper divisors (302629143911).

5144695446181 is a wasteful number, since it uses less digits than its factorization.

5144695446181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302629143910.

The product of its digits is 16588800, while the sum is 58.

The spelling of 5144695446181 in words is "five trillion, one hundred forty-four billion, six hundred ninety-five million, four hundred forty-six thousand, one hundred eighty-one".