8521272080 has 20 divisors (see below), whose sum is σ = 19811957772. Its totient is φ = 3408508800.

The previous prime is 8521272073. The next prime is 8521272127. The reversal of 8521272080 is 802721258.

It can be written as a sum of positive squares in 2 ways, for example, as 5333088784 + 3188183296 = 73028^2 + 56464^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×8521272080² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 8521272080.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53257871 + ... + 53258030.

Almost surely, 2^8521272080 is an apocalyptic number.

8521272080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8521272080 is an abundant number, since it is smaller than the sum of its proper divisors (11290685692).

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

8521272080 is a wasteful number, since it uses less digits than its factorization.

8521272080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106515914 (or 106515908 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 8521272080 is about 92310.7365369814. The cubic root of 8521272080 is about 2042.5285894842.

The spelling of 8521272080 in words is "eight billion, five hundred twenty-one million, two hundred seventy-two thousand, eighty".