7520666344 has 16 divisors (see below), whose sum is σ = 14146306020. Its totient is φ = 3748318080.

The previous prime is 7520666333. The next prime is 7520666359. The reversal of 7520666344 is 4436660257.

It can be written as a sum of positive squares in 2 ways, for example, as 7380528100 + 140138244 = 85910^2 + 11838^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7520666344.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1499227 + ... + 1504234.

Almost surely, 2^7520666344 is an apocalyptic number.

It is an amenable number.

7520666344 is a deficient number, since it is larger than the sum of its proper divisors (6625639676).

7520666344 is a wasteful number, since it uses less digits than its factorization.

7520666344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003780 (or 3003776 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 43.

The square root of 7520666344 is about 86721.7754892046. The cubic root of 7520666344 is about 1959.2300828608.

The spelling of 7520666344 in words is "seven billion, five hundred twenty million, six hundred sixty-six thousand, three hundred forty-four".