5161660628447 has 16 divisors (see below), whose sum is σ = 5471184102912. Its totient is φ = 4852794679680.

The previous prime is 5161660628437. The next prime is 5161660628459. The reversal of 5161660628447 is 7448260661615.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5161660628447 - 2³⁸ = 4886782721503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5161660628392 and 5161660628401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5161660628437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74243372 + ... + 74312862.

It is an arithmetic number, because the mean of its divisors is an integer number (341949006432).

Almost surely, 2^{5161660628447} is an apocalyptic number.

5161660628447 is a deficient number, since it is larger than the sum of its proper divisors (309523474465).

5161660628447 is a wasteful number, since it uses less digits than its factorization.

5161660628447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74158.

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 5161660628447 in words is "five trillion, one hundred sixty-one billion, six hundred sixty million, six hundred twenty-eight thousand, four hundred forty-seven".