7512315840 has 196 divisors, whose sum is σ = 26821616664. Its totient is φ = 2003222016.

The previous prime is 7512315803. The next prime is 7512315841. The reversal of 7512315840 is 485132157.

7512315840 is a `hidden beast` number, since 7 + 51 + 23 + 1 + 584 + 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 = 7512315795 and 7512315804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7512315841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 217179 + ... + 249381.

Almost surely, 2^7512315840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7512315840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13410808332).

7512315840 is an abundant number, since it is smaller than the sum of its proper divisors (19309300824).

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

7512315840 is an equidigital number, since it uses as much as digits as its factorization.

7512315840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32238 (or 32213 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 7512315840 is about 86673.6167469663. The cubic root of 7512315840 is about 1958.5046764984.

Adding to 7512315840 its reverse (485132157), we get a palindrome (7997447997).

The spelling of 7512315840 in words is "seven billion, five hundred twelve million, three hundred fifteen thousand, eight hundred forty".