8135021736 has 96 divisors (see below), whose sum is σ = 23272254720. Its totient is φ = 2563142400.

The previous prime is 8135021723. The next prime is 8135021753. The reversal of 8135021736 is 6371205318.

8135021736 is a `hidden beast` number, since 81 + 3 + 502 + 1 + 73 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 8135021736.

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, 53596 + ... + 138356.

It is an arithmetic number, because the mean of its divisors is an integer number (242419320).

Almost surely, 2^8135021736 is an apocalyptic number.

8135021736 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8135021736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11636127360).

8135021736 is an abundant number, since it is smaller than the sum of its proper divisors (15137232984).

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

8135021736 is a wasteful number, since it uses less digits than its factorization.

8135021736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84847 (or 84840 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 8135021736 is about 90194.3553444449. The cubic root of 8135021736 is about 2011.1890966556.

The spelling of 8135021736 in words is "eight billion, one hundred thirty-five million, twenty-one thousand, seven hundred thirty-six".