5140517665 has 4 divisors (see below), whose sum is σ = 6168621204. Its totient is φ = 4112414128.

The previous prime is 5140517663. The next prime is 5140517677. The reversal of 5140517665 is 5667150415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5667150415 = 5 ⋅1133430083.

It can be written as a sum of positive squares in 2 ways, for example, as 1507924224 + 3632593441 = 38832^2 + 60271^2 .

It is a cyclic number.

It is not a de Polignac number, because 5140517665 - 2¹ = 5140517663 is a prime.

It is a super-3 number, since 3×5140517665³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5140517663) 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 3 ways as a sum of consecutive naturals, for example, 514051762 + ... + 514051771.

It is an arithmetic number, because the mean of its divisors is an integer number (1542155301).

Almost surely, 2^5140517665 is an apocalyptic number.

It is an amenable number.

5140517665 is a deficient number, since it is larger than the sum of its proper divisors (1028103539).

5140517665 is a wasteful number, since it uses less digits than its factorization.

5140517665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028103538.

The product of its (nonzero) digits is 126000, while the sum is 40.

The square root of 5140517665 is about 71697.4034746029. The cubic root of 5140517665 is about 1725.8469735526.

The spelling of 5140517665 in words is "five billion, one hundred forty million, five hundred seventeen thousand, six hundred sixty-five".