86171238040 has 64 divisors (see below), whose sum is σ = 198505533600. Its totient is φ = 33648018432.

The previous prime is 86171238037. The next prime is 86171238071. The reversal of 86171238040 is 4083217168.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 86171237984 and 86171238002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3277266 + ... + 3303454.

Almost surely, 2^86171238040 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 86171238040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99252766800).

86171238040 is an abundant number, since it is smaller than the sum of its proper divisors (112334295560).

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

86171238040 is a wasteful number, since it uses less digits than its factorization.

86171238040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28156 (or 28152 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 86171238040 in words is "eighty-six billion, one hundred seventy-one million, two hundred thirty-eight thousand, forty".