6523816140 has 144 divisors (see below), whose sum is σ = 21414451968. Its totient is φ = 1664017344.

The previous prime is 6523816099. The next prime is 6523816151. The reversal of 6523816140 is 416183256.

It is a happy number.

6523816140 is a `hidden beast` number, since 6 + 5 + 2 + 38 + 1 + 614 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6523816095 and 6523816104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82599 + ... + 140961.

It is an arithmetic number, because the mean of its divisors is an integer number (148711472).

Almost surely, 2^6523816140 is an apocalyptic number.

6523816140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6523816140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10707225984).

6523816140 is an abundant number, since it is smaller than the sum of its proper divisors (14890635828).

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

6523816140 is a wasteful number, since it uses less digits than its factorization.

6523816140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58410 (or 58396 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 6523816140 is about 80770.1438651684. The cubic root of 6523816140 is about 1868.5321337643.

Adding to 6523816140 its reverse (416183256), we get a palindrome (6939999396).

The spelling of 6523816140 in words is "six billion, five hundred twenty-three million, eight hundred sixteen thousand, one hundred forty".