8520457770 has 128 divisors (see below), whose sum is σ = 24821959680. Its totient is φ = 2062635840.

The previous prime is 8520457741. The next prime is 8520457807. The reversal of 8520457770 is 777540258.

8520457770 is a `hidden beast` number, since 8 + 5 + 2 + 0 + 4 + 577 + 70 = 666.

It is a super-4 number, since 4×8520457770⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2692209 + ... + 2695371.

It is an arithmetic number, because the mean of its divisors is an integer number (193921560).

Almost surely, 2^8520457770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8520457770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12410979840).

8520457770 is an abundant number, since it is smaller than the sum of its proper divisors (16301501910).

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

8520457770 is a wasteful number, since it uses less digits than its factorization.

8520457770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097 (or 4091 counting only the distinct ones).

The product of its (nonzero) digits is 548800, while the sum is 45.

The square root of 8520457770 is about 92306.3257312304. The cubic root of 8520457770 is about 2042.4635246901.

The spelling of 8520457770 in words is "eight billion, five hundred twenty million, four hundred fifty-seven thousand, seven hundred seventy".