64747111249 has 2 divisors, whose sum is σ = 64747111250. Its totient is φ = 64747111248.

The previous prime is 64747111237. The next prime is 64747111259. The reversal of 64747111249 is 94211174746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59000410000 + 5746701249 = 242900^2 + 75807^2 .

It is a cyclic number.

It is not a de Polignac number, because 64747111249 - 2³⁵ = 30387372881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64747111199 and 64747111208.

It is not a weakly prime, because it can be changed into another prime (64747111259) 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, 32373555624 + 32373555625.

It is an arithmetic number, because the mean of its divisors is an integer number (32373555625).

Almost surely, 2^64747111249 is an apocalyptic number.

It is an amenable number.

64747111249 is a deficient number, since it is larger than the sum of its proper divisors (1).

64747111249 is an equidigital number, since it uses as much as digits as its factorization.

64747111249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 46.

The spelling of 64747111249 in words is "sixty-four billion, seven hundred forty-seven million, one hundred eleven thousand, two hundred forty-nine".