86666237136 has 120 divisors (see below), whose sum is σ = 244175491560. Its totient is φ = 28695168000.

The previous prime is 86666237089. The next prime is 86666237149. The reversal of 86666237136 is 63173266668.

It can be written as a sum of positive squares in 4 ways, for example, as 40594190400 + 46072046736 = 201480^2 + 214644^2 .

It is a super-2 number, since 2×86666237136² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15199086 + ... + 15204786.

It is an arithmetic number, because the mean of its divisors is an integer number (2034795763).

Almost surely, 2^86666237136 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 86666237136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122087745780).

86666237136 is an abundant number, since it is smaller than the sum of its proper divisors (157509254424).

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

86666237136 is a wasteful number, since it uses less digits than its factorization.

86666237136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6405 (or 6396 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The spelling of 86666237136 in words is "eighty-six billion, six hundred sixty-six million, two hundred thirty-seven thousand, one hundred thirty-six".