64941329635969 has 2 divisors, whose sum is σ = 64941329635970. Its totient is φ = 64941329635968.

The previous prime is 64941329635907. The next prime is 64941329635997. The reversal of 64941329635969 is 96953692314946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40026626755600 + 24914702880369 = 6326660^2 + 4991463^2 .

It is a cyclic number.

It is not a de Polignac number, because 64941329635969 - 2⁴¹ = 62742306380417 is a prime.

It is a super-2 number, since 2×64941329635969² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64941329635895 and 64941329635904.

It is not a weakly prime, because it can be changed into another prime (64941329635999) 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, 32470664817984 + 32470664817985.

It is an arithmetic number, because the mean of its divisors is an integer number (32470664817985).

Almost surely, 2^{64941329635969} is an apocalyptic number.

It is an amenable number.

64941329635969 is a deficient number, since it is larger than the sum of its proper divisors (1).

64941329635969 is an equidigital number, since it uses as much as digits as its factorization.

64941329635969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2040733440, while the sum is 76.

The spelling of 64941329635969 in words is "sixty-four trillion, nine hundred forty-one billion, three hundred twenty-nine million, six hundred thirty-five thousand, nine hundred sixty-nine".