7520348745 has 288 divisors, whose sum is σ = 17445024000. Its totient is φ = 3071053440.

The previous prime is 7520348743. The next prime is 7520348749. The reversal of 7520348745 is 5478430257.

7520348745 is a `hidden beast` number, since 7 + 520 + 3 + 4 + 87 + 45 = 666.

It is not a de Polignac number, because 7520348745 - 2¹ = 7520348743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7520348745.

It is not an unprimeable number, because it can be changed into a prime (7520348741) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 242591880 + ... + 242591910.

It is an arithmetic number, because the mean of its divisors is an integer number (60573000).

Almost surely, 2^7520348745 is an apocalyptic number.

It is an amenable number.

7520348745 is an abundant number, since it is smaller than the sum of its proper divisors (9924675255).

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

7520348745 is a wasteful number, since it uses less digits than its factorization.

7520348745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 45.

The square root of 7520348745 is about 86719.9443323161. The cubic root of 7520348745 is about 1959.2025029344.

The spelling of 7520348745 in words is "seven billion, five hundred twenty million, three hundred forty-eight thousand, seven hundred forty-five".