64061616049 has 2 divisors, whose sum is σ = 64061616050. Its totient is φ = 64061616048.

The previous prime is 64061616023. The next prime is 64061616079. The reversal of 64061616049 is 94061616046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63992809024 + 68807025 = 252968^2 + 8295^2 .

It is a cyclic number.

It is not a de Polignac number, because 64061616049 - 2⁷ = 64061615921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64061615996 and 64061616014.

It is not a weakly prime, because it can be changed into another prime (64061616079) 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, 32030808024 + 32030808025.

It is an arithmetic number, because the mean of its divisors is an integer number (32030808025).

Almost surely, 2^64061616049 is an apocalyptic number.

It is an amenable number.

64061616049 is a deficient number, since it is larger than the sum of its proper divisors (1).

64061616049 is an equidigital number, since it uses as much as digits as its factorization.

64061616049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 64061616049 in words is "sixty-four billion, sixty-one million, six hundred sixteen thousand, forty-nine".