5126861857 has 8 divisors (see below), whose sum is σ = 5564711936. Its totient is φ = 4695222672.

The previous prime is 5126861833. The next prime is 5126861863. The reversal of 5126861857 is 7581686215.

5126861857 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5126861857 is a prime.

It is a super-4 number, since 4×5126861857⁴ (a number of 40 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5126861857.

It is not an unprimeable number, because it can be changed into a prime (5126861557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1551003 + ... + 1554304.

It is an arithmetic number, because the mean of its divisors is an integer number (695588992).

Almost surely, 2^5126861857 is an apocalyptic number.

It is an amenable number.

5126861857 is a deficient number, since it is larger than the sum of its proper divisors (437850079).

5126861857 is a wasteful number, since it uses less digits than its factorization.

5126861857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105447.

The product of its digits is 806400, while the sum is 49.

The square root of 5126861857 is about 71602.1079089156. The cubic root of 5126861857 is about 1724.3173782439.

The spelling of 5126861857 in words is "five billion, one hundred twenty-six million, eight hundred sixty-one thousand, eight hundred fifty-seven".