7513712440 has 64 divisors (see below), whose sum is σ = 18245878560. Its totient is φ = 2768263680.

The previous prime is 7513712383. The next prime is 7513712461. The reversal of 7513712440 is 442173157.

It is a junction number, because it is equal to n+sod(n) for n = 7513712396 and 7513712405.

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, 227370 + ... + 258310.

Almost surely, 2^7513712440 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 7513712440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9122939280).

7513712440 is an abundant number, since it is smaller than the sum of its proper divisors (10732166120).

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

7513712440 is a wasteful number, since it uses less digits than its factorization.

7513712440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31432 (or 31428 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 7513712440 is about 86681.6730341541. The cubic root of 7513712440 is about 1958.6260362408.

Adding to 7513712440 its reverse (442173157), we get a palindrome (7955885597).

The spelling of 7513712440 in words is "seven billion, five hundred thirteen million, seven hundred twelve thousand, four hundred forty".