20430316747 has 2 divisors, whose sum is σ = 20430316748. Its totient is φ = 20430316746.

The previous prime is 20430316723. The next prime is 20430316757. The reversal of 20430316747 is 74761303402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20430316747 - 2²³ = 20421928139 is a prime.

It is not a weakly prime, because it can be changed into another prime (20430316717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215158373 + 10215158374.

It is an arithmetic number, because the mean of its divisors is an integer number (10215158374).

Almost surely, 2^20430316747 is an apocalyptic number.

20430316747 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430316747 is an equidigital number, since it uses as much as digits as its factorization.

20430316747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 37.

The spelling of 20430316747 in words is "twenty billion, four hundred thirty million, three hundred sixteen thousand, seven hundred forty-seven".