64204946789 has 2 divisors, whose sum is σ = 64204946790. Its totient is φ = 64204946788.

The previous prime is 64204946761. The next prime is 64204946801. The reversal of 64204946789 is 98764940246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56173740100 + 8031206689 = 237010^2 + 89617^2 .

It is a cyclic number.

It is not a de Polignac number, because 64204946789 - 2¹⁶ = 64204881253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64204946089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32102473394 + 32102473395.

It is an arithmetic number, because the mean of its divisors is an integer number (32102473395).

Almost surely, 2^64204946789 is an apocalyptic number.

It is an amenable number.

64204946789 is a deficient number, since it is larger than the sum of its proper divisors (1).

64204946789 is an equidigital number, since it uses as much as digits as its factorization.

64204946789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20901888, while the sum is 59.

The spelling of 64204946789 in words is "sixty-four billion, two hundred four million, nine hundred forty-six thousand, seven hundred eighty-nine".