8135854720 has 128 divisors (see below), whose sum is σ = 23398473600. Its totient is φ = 2642595840.

The previous prime is 8135854703. The next prime is 8135854723. The reversal of 8135854720 is 274585318.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (8135854723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37330 + ... + 132910.

It is an arithmetic number, because the mean of its divisors is an integer number (182800575).

Almost surely, 2^8135854720 is an apocalyptic number.

8135854720 is a gapful number since it is divisible by the number (80) 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 8135854720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11699236800).

8135854720 is an abundant number, since it is smaller than the sum of its proper divisors (15262618880).

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

8135854720 is a wasteful number, since it uses less digits than its factorization.

8135854720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95626 (or 95614 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 8135854720 is about 90198.9729431550. The cubic root of 8135854720 is about 2011.2577394208.

The spelling of 8135854720 in words is "eight billion, one hundred thirty-five million, eight hundred fifty-four thousand, seven hundred twenty".