247548985913 has 2 divisors, whose sum is σ = 247548985914. Its totient is φ = 247548985912.

The previous prime is 247548985907. The next prime is 247548985961. The reversal of 247548985913 is 319589845742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182019129769 + 65529856144 = 426637^2 + 255988^2 .

It is a cyclic number.

It is not a de Polignac number, because 247548985913 - 2⁸ = 247548985657 is a prime.

It is a super-2 number, since 2×247548985913² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247548985913.

It is not a weakly prime, because it can be changed into another prime (247548985213) 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, 123774492956 + 123774492957.

It is an arithmetic number, because the mean of its divisors is an integer number (123774492957).

Almost surely, 2^247548985913 is an apocalyptic number.

It is an amenable number.

247548985913 is a deficient number, since it is larger than the sum of its proper divisors (1).

247548985913 is an equidigital number, since it uses as much as digits as its factorization.

247548985913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87091200, while the sum is 65.

The spelling of 247548985913 in words is "two hundred forty-seven billion, five hundred forty-eight million, nine hundred eighty-five thousand, nine hundred thirteen".