858585858723 has 8 divisors (see below), whose sum is σ = 1271979050000. Its totient is φ = 572390572464.

The previous prime is 858585858707. The next prime is 858585858727. The reversal of 858585858723 is 327858585858.

It is not a de Polignac number, because 858585858723 - 2⁴ = 858585858707 is a prime.

It is a super-2 number, since 2×858585858723² (a number of 25 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (858585858727) 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, 15899738098 + ... + 15899738151.

It is an arithmetic number, because the mean of its divisors is an integer number (158997381250).

Almost surely, 2^858585858723 is an apocalyptic number.

858585858723 is a deficient number, since it is larger than the sum of its proper divisors (413393191277).

858585858723 is a wasteful number, since it uses less digits than its factorization.

858585858723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31799476258 (or 31799476252 counting only the distinct ones).

The product of its digits is 860160000, while the sum is 72.

The spelling of 858585858723 in words is "eight hundred fifty-eight billion, five hundred eighty-five million, eight hundred fifty-eight thousand, seven hundred twenty-three".