7520453812 has 24 divisors (see below), whose sum is σ = 13958771904. Its totient is φ = 3532989312.

The previous prime is 7520453779. The next prime is 7520453813. The reversal of 7520453812 is 2183540257.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7520453813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54288 + ... + 134119.

It is an arithmetic number, because the mean of its divisors is an integer number (581615496).

Almost surely, 2^7520453812 is an apocalyptic number.

It is an amenable number.

7520453812 is a deficient number, since it is larger than the sum of its proper divisors (6438318092).

7520453812 is a wasteful number, since it uses less digits than its factorization.

7520453812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189015 (or 189013 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 7520453812 is about 86720.5501135688. The cubic root of 7520453812 is about 1959.2116269160.

The spelling of 7520453812 in words is "seven billion, five hundred twenty million, four hundred fifty-three thousand, eight hundred twelve".