64800000049 has 2 divisors, whose sum is σ = 64800000050. Its totient is φ = 64800000048.

The previous prime is 64800000043. The next prime is 64800000113. The reversal of 64800000049 is 94000000846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58777153600 + 6022846449 = 242440^2 + 77607^2 .

It is a cyclic number.

It is not a de Polignac number, because 64800000049 - 2¹¹ = 64799998001 is a prime.

It is not a weakly prime, because it can be changed into another prime (64800000043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32400000024 + 32400000025.

It is an arithmetic number, because the mean of its divisors is an integer number (32400000025).

Almost surely, 2^64800000049 is an apocalyptic number.

It is an amenable number.

64800000049 is a deficient number, since it is larger than the sum of its proper divisors (1).

64800000049 is an equidigital number, since it uses as much as digits as its factorization.

64800000049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 64800000049 in words is "sixty-four billion, eight hundred million, forty-nine", and thus it is an aban number.