8535523440 has 80 divisors (see below), whose sum is σ = 26832854016. Its totient is φ = 2244076800.

The previous prime is 8535523427. The next prime is 8535523453. The reversal of 8535523440 is 443255358.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8535523427) and next prime (8535523453).

It is a tau number, because it is divible by the number of its divisors (80).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233416 + ... + 267495.

Almost surely, 2^8535523440 is an apocalyptic number.

8535523440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8535523440 is an abundant number, since it is smaller than the sum of its proper divisors (18297330576).

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

8535523440 is a wasteful number, since it uses less digits than its factorization.

8535523440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500998 (or 500992 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

The square root of 8535523440 is about 92387.8966098915. The cubic root of 8535523440 is about 2043.6666276158. Note that the first 4 decimals are identical.

Adding to 8535523440 its reverse (443255358), we get a palindrome (8978778798).

The spelling of 8535523440 in words is "eight billion, five hundred thirty-five million, five hundred twenty-three thousand, four hundred forty".