5171606550081 has 24 divisors (see below), whose sum is σ = 7613623069416. Its totient is φ = 3381539616000.

The previous prime is 5171606550059. The next prime is 5171606550091. The reversal of 5171606550081 is 1800556061715.

It is a happy number.

5171606550081 is a `hidden beast` number, since 5 + 1 + 7 + 1 + 6 + 0 + 65 + 500 + 81 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2694259616400 + 2477346933681 = 1641420^2 + 1573959^2 .

It is not a de Polignac number, because 5171606550081 - 2¹⁵ = 5171606517313 is a prime.

It is a super-2 number, since 2×5171606550081² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5171606550091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 427170 + ... + 3244331.

It is an arithmetic number, because the mean of its divisors is an integer number (317234294559).

Almost surely, 2^{5171606550081} is an apocalyptic number.

It is an amenable number.

5171606550081 is a deficient number, since it is larger than the sum of its proper divisors (2442016519335).

5171606550081 is a wasteful number, since it uses less digits than its factorization.

5171606550081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674513 (or 3674510 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 45.

The spelling of 5171606550081 in words is "five trillion, one hundred seventy-one billion, six hundred six million, five hundred fifty thousand, eighty-one".