5109729857 has 4 divisors (see below), whose sum is σ = 5112288000. Its totient is φ = 5107171716.

The previous prime is 5109729853. The next prime is 5109729871. The reversal of 5109729857 is 7589279015.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7589279015 = 5 ⋅1517855803.

It is a cyclic number.

It is not a de Polignac number, because 5109729857 - 2² = 5109729853 is a prime.

It is a super-2 number, since 2×5109729857² = 52218678423034480898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5109729799 and 5109729808.

It is not an unprimeable number, because it can be changed into a prime (5109729853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276073 + ... + 1280070.

It is an arithmetic number, because the mean of its divisors is an integer number (1278072000).

Almost surely, 2^5109729857 is an apocalyptic number.

It is an amenable number.

5109729857 is a deficient number, since it is larger than the sum of its proper divisors (2558143).

5109729857 is a wasteful number, since it uses less digits than its factorization.

5109729857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558142.

The product of its (nonzero) digits is 1587600, while the sum is 53.

The square root of 5109729857 is about 71482.3744499300. The cubic root of 5109729857 is about 1722.3945664431.

The spelling of 5109729857 in words is "five billion, one hundred nine million, seven hundred twenty-nine thousand, eight hundred fifty-seven".