5112121655617 has 8 divisors (see below), whose sum is σ = 5126993335080. Its totient is φ = 5097268911360.

The previous prime is 5112121655609. The next prime is 5112121655647. The reversal of 5112121655617 is 7165561212115.

It can be written as a sum of positive squares in 4 ways, for example, as 2233123764496 + 2878997891121 = 1494364^2 + 1696761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5112121655617 - 2³ = 5112121655609 is a prime.

It is a super-2 number, since 2×5112121655617² (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 (5112121655647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4192968 + ... + 5273065.

It is an arithmetic number, because the mean of its divisors is an integer number (640874166885).

Almost surely, 2^{5112121655617} is an apocalyptic number.

It is an amenable number.

5112121655617 is a deficient number, since it is larger than the sum of its proper divisors (14871679463).

5112121655617 is a wasteful number, since it uses less digits than its factorization.

5112121655617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9467603.

The product of its digits is 126000, while the sum is 43.

The spelling of 5112121655617 in words is "five trillion, one hundred twelve billion, one hundred twenty-one million, six hundred fifty-five thousand, six hundred seventeen".