8135550720 has 864 divisors, whose sum is σ = 33672038400. Its totient is φ = 1791590400.

The previous prime is 8135550673. The next prime is 8135550733. The reversal of 8135550720 is 270555318.

8135550720 is a `hidden beast` number, since 8 + 1 + 35 + 550 + 72 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 74638026 + ... + 74638134.

Almost surely, 2^8135550720 is an apocalyptic number.

8135550720 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 8135550720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16836019200).

8135550720 is an abundant number, since it is smaller than the sum of its proper divisors (25536487680).

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

8135550720 is a wasteful number, since it uses less digits than its factorization.

8135550720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 8135550720 is about 90197.2877641008. The cubic root of 8135550720 is about 2011.2326885815.

It can be divided in two parts, 8135 and 550720, that added together give a palindrome (558855).

The spelling of 8135550720 in words is "eight billion, one hundred thirty-five million, five hundred fifty thousand, seven hundred twenty".