85251751850 has 12 divisors (see below), whose sum is σ = 158568258534. Its totient is φ = 34100700720.

The previous prime is 85251751831. The next prime is 85251751859. The reversal of 85251751850 is 5815715258.

It can be written as a sum of positive squares in 3 ways, for example, as 50809217281 + 34442534569 = 225409^2 + 185587^2 .

It is a super-2 number, since 2×85251751850² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 85251751795 and 85251751804.

It is not an unprimeable number, because it can be changed into a prime (85251751859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 852517469 + ... + 852517568.

Almost surely, 2^85251751850 is an apocalyptic number.

85251751850 is a deficient number, since it is larger than the sum of its proper divisors (73316506684).

85251751850 is a wasteful number, since it uses less digits than its factorization.

85251751850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705035049 (or 1705035044 counting only the distinct ones).

The product of its (nonzero) digits is 560000, while the sum is 47.

The spelling of 85251751850 in words is "eighty-five billion, two hundred fifty-one million, seven hundred fifty-one thousand, eight hundred fifty".