10285117986 has 64 divisors (see below), whose sum is σ = 24392503296. Its totient is φ = 2850043200.

The previous prime is 10285117961. The next prime is 10285118021. The reversal of 10285117986 is 68971158201.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35791 + ... + 147821.

It is an arithmetic number, because the mean of its divisors is an integer number (381132864).

Almost surely, 2^10285117986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10285117986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12196251648).

10285117986 is an abundant number, since it is smaller than the sum of its proper divisors (14107385310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10285117986 is a wasteful number, since it uses less digits than its factorization.

10285117986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112167.

The product of its (nonzero) digits is 241920, while the sum is 48.

It can be divided in two parts, 10285 and 117986, that added together give a triangular number (128271 = T₅₀₆).

The spelling of 10285117986 in words is "ten billion, two hundred eighty-five million, one hundred seventeen thousand, nine hundred eighty-six".