7478316523 has 2 divisors, whose sum is σ = 7478316524. Its totient is φ = 7478316522.

The previous prime is 7478316497. The next prime is 7478316551. The reversal of 7478316523 is 3256138747.

It is a happy number.

7478316523 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (3256138747) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7478316523 is a prime.

It is not a weakly prime, because it can be changed into another prime (7478316583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3739158261 + 3739158262.

It is an arithmetic number, because the mean of its divisors is an integer number (3739158262).

Almost surely, 2^7478316523 is an apocalyptic number.

7478316523 is a deficient number, since it is larger than the sum of its proper divisors (1).

7478316523 is an equidigital number, since it uses as much as digits as its factorization.

7478316523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 46.

The square root of 7478316523 is about 86477.2601497064. The cubic root of 7478316523 is about 1955.5456009961.

The spelling of 7478316523 in words is "seven billion, four hundred seventy-eight million, three hundred sixteen thousand, five hundred twenty-three".