8137666836 has 96 divisors (see below), whose sum is σ = 22886935680. Its totient is φ = 2485562112.

The previous prime is 8137666813. The next prime is 8137666841. The reversal of 8137666836 is 6386667318.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171195 + ... + 213501.

It is an arithmetic number, because the mean of its divisors is an integer number (238405580).

Almost surely, 2^8137666836 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 8137666836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11443467840).

8137666836 is an abundant number, since it is smaller than the sum of its proper divisors (14749268844).

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

8137666836 is a wasteful number, since it uses less digits than its factorization.

8137666836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42470 (or 42462 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 8137666836 is about 90209.0174871670. The cubic root of 8137666836 is about 2011.4070522219.

The spelling of 8137666836 in words is "eight billion, one hundred thirty-seven million, six hundred sixty-six thousand, eight hundred thirty-six".