210539316947 has 2 divisors, whose sum is σ = 210539316948. Its totient is φ = 210539316946.

The previous prime is 210539316929. The next prime is 210539316997. The reversal of 210539316947 is 749613935012.

It is an a-pointer prime, because the next prime (210539316997) can be obtained adding 210539316947 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210539316947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210539316895 and 210539316904.

It is not a weakly prime, because it can be changed into another prime (210539316997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105269658473 + 105269658474.

It is an arithmetic number, because the mean of its divisors is an integer number (105269658474).

Almost surely, 2^210539316947 is an apocalyptic number.

210539316947 is a deficient number, since it is larger than the sum of its proper divisors (1).

210539316947 is an equidigital number, since it uses as much as digits as its factorization.

210539316947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 210539316947 in words is "two hundred ten billion, five hundred thirty-nine million, three hundred sixteen thousand, nine hundred forty-seven".