64361428993 has 2 divisors, whose sum is σ = 64361428994. Its totient is φ = 64361428992.

The previous prime is 64361428961. The next prime is 64361429047. The reversal of 64361428993 is 39982416346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54413959824 + 9947469169 = 233268^2 + 99737^2 .

It is a cyclic number.

It is not a de Polignac number, because 64361428993 - 2⁵ = 64361428961 is a prime.

It is not a weakly prime, because it can be changed into another prime (64361428903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32180714496 + 32180714497.

It is an arithmetic number, because the mean of its divisors is an integer number (32180714497).

Almost surely, 2^64361428993 is an apocalyptic number.

It is an amenable number.

64361428993 is a deficient number, since it is larger than the sum of its proper divisors (1).

64361428993 is an equidigital number, since it uses as much as digits as its factorization.

64361428993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6718464, while the sum is 55.

The spelling of 64361428993 in words is "sixty-four billion, three hundred sixty-one million, four hundred twenty-eight thousand, nine hundred ninety-three".