8521174480 has 120 divisors (see below), whose sum is σ = 24819239592. Its totient is φ = 2696795136.

The previous prime is 8521174477. The next prime is 8521174483. The reversal of 8521174480 is 844711258.

It is an interprime number because it is at equal distance from previous prime (8521174477) and next prime (8521174483).

It can be written as a sum of positive squares in 4 ways, for example, as 637865536 + 7883308944 = 25256^2 + 88788^2 .

It is a super-2 number, since 2×8521174480² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8521174483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32647 + ... + 134566.

Almost surely, 2^8521174480 is an apocalyptic number.

8521174480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8521174480 is an abundant number, since it is smaller than the sum of its proper divisors (16298065112).

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

8521174480 is a wasteful number, since it uses less digits than its factorization.

8521174480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167253 (or 167240 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 8521174480 is about 92310.2078862354. The cubic root of 8521174480 is about 2042.5207912920.

The spelling of 8521174480 in words is "eight billion, five hundred twenty-one million, one hundred seventy-four thousand, four hundred eighty".