86640837723156 has 96 divisors (see below), whose sum is σ = 220880968543872. Its totient is φ = 26321464995840.

The previous prime is 86640837723149. The next prime is 86640837723203. The reversal of 86640837723156 is 65132773804668.

It is a super-2 number, since 2×86640837723156² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25607961 + ... + 28793216.

It is an arithmetic number, because the mean of its divisors is an integer number (2300843422332).

Almost surely, 2^{86640837723156} is an apocalyptic number.

It is an amenable number.

86640837723156 is an abundant number, since it is smaller than the sum of its proper divisors (134240130820716).

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

86640837723156 is a wasteful number, since it uses less digits than its factorization.

86640837723156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54401449 (or 54401447 counting only the distinct ones).

The product of its (nonzero) digits is 243855360, while the sum is 66.

The spelling of 86640837723156 in words is "eighty-six trillion, six hundred forty billion, eight hundred thirty-seven million, seven hundred twenty-three thousand, one hundred fifty-six".