7520134945 has 16 divisors (see below), whose sum is σ = 9140869440. Its totient is φ = 5938703424.

The previous prime is 7520134927. The next prime is 7520134949. The reversal of 7520134945 is 5494310257.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7520134945 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7520134898 and 7520134907.

It is not an unprimeable number, because it can be changed into a prime (7520134949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126571 + ... + 176239.

It is an arithmetic number, because the mean of its divisors is an integer number (571304340).

Almost surely, 2^7520134945 is an apocalyptic number.

It is an amenable number.

7520134945 is a deficient number, since it is larger than the sum of its proper divisors (1620734495).

7520134945 is a wasteful number, since it uses less digits than its factorization.

7520134945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50064.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 7520134945 is about 86718.7116198113. The cubic root of 7520134945 is about 1959.1839363546.

The spelling of 7520134945 in words is "seven billion, five hundred twenty million, one hundred thirty-four thousand, nine hundred forty-five".