5157878017 has 4 divisors (see below), whose sum is σ = 5159196720. Its totient is φ = 5156559316.

The previous prime is 5157877987. The next prime is 5157878059. The reversal of 5157878017 is 7108787515.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5157878017 - 2¹⁵ = 5157845249 is a prime.

It is a Smith number, since the sum of its digits (49) 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 not an unprimeable number, because it can be changed into a prime (5157878417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653467 + ... + 661312.

It is an arithmetic number, because the mean of its divisors is an integer number (1289799180).

Almost surely, 2^5157878017 is an apocalyptic number.

It is an amenable number.

5157878017 is a deficient number, since it is larger than the sum of its proper divisors (1318703).

5157878017 is a wasteful number, since it uses less digits than its factorization.

5157878017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318702.

The product of its (nonzero) digits is 548800, while the sum is 49.

The square root of 5157878017 is about 71818.3682423933. The cubic root of 5157878017 is about 1727.7876111822.

The spelling of 5157878017 in words is "five billion, one hundred fifty-seven million, eight hundred seventy-eight thousand, seventeen".