8521365340 has 24 divisors (see below), whose sum is σ = 17897468400. Its totient is φ = 3408050688.

The previous prime is 8521365337. The next prime is 8521365353. The reversal of 8521365340 is 435631258.

It is a super-2 number, since 2×8521365340² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8521365340.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 130636 + ... + 184684.

It is an arithmetic number, because the mean of its divisors is an integer number (745727850).

Almost surely, 2^8521365340 is an apocalyptic number.

It is an amenable number.

8521365340 is an abundant number, since it is smaller than the sum of its proper divisors (9376103060).

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

8521365340 is a wasteful number, since it uses less digits than its factorization.

8521365340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61941 (or 61939 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 8521365340 is about 92311.2416772735. The cubic root of 8521365340 is about 2042.5360408569.

Adding to 8521365340 its reverse (435631258), we get a palindrome (8956996598).

It can be divided in two parts, 852136 and 5340, that added together give a square (857476 = 926²).

The spelling of 8521365340 in words is "eight billion, five hundred twenty-one million, three hundred sixty-five thousand, three hundred forty".