85861833156 has 144 divisors (see below), whose sum is σ = 251360299008. Its totient is φ = 24423552000.

The previous prime is 85861833137. The next prime is 85861833157. The reversal of 85861833156 is 65133816858.

85861833156 is a `hidden beast` number, since 8 + 5 + 8 + 618 + 3 + 3 + 15 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (85861833157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2561706 + ... + 2595006.

It is an arithmetic number, because the mean of its divisors is an integer number (1745557632).

Almost surely, 2^85861833156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85861833156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125680149504).

85861833156 is an abundant number, since it is smaller than the sum of its proper divisors (165498465852).

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

85861833156 is a wasteful number, since it uses less digits than its factorization.

85861833156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33722 (or 33717 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The spelling of 85861833156 in words is "eighty-five billion, eight hundred sixty-one million, eight hundred thirty-three thousand, one hundred fifty-six".