5126861578 has 16 divisors (see below), whose sum is σ = 7897340160. Its totient is φ = 2495329200.

The previous prime is 5126861569. The next prime is 5126861609. The reversal of 5126861578 is 8751686215.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217293 + ... + 239728.

It is an arithmetic number, because the mean of its divisors is an integer number (493583760).

Almost surely, 2^5126861578 is an apocalyptic number.

5126861578 is a deficient number, since it is larger than the sum of its proper divisors (2770478582).

5126861578 is a wasteful number, since it uses less digits than its factorization.

5126861578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457173.

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

The square root of 5126861578 is about 71602.1059606490. The cubic root of 5126861578 is about 1724.3173469652.

The spelling of 5126861578 in words is "five billion, one hundred twenty-six million, eight hundred sixty-one thousand, five hundred seventy-eight".