64802128473029 has 2 divisors, whose sum is σ = 64802128473030. Its totient is φ = 64802128473028.

The previous prime is 64802128473011. The next prime is 64802128473083. The reversal of 64802128473029 is 92037482120846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64492174612804 + 309953860225 = 8030702^2 + 556735^2 .

It is a cyclic number.

It is not a de Polignac number, because 64802128473029 - 2¹² = 64802128468933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64802128073029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32401064236514 + 32401064236515.

It is an arithmetic number, because the mean of its divisors is an integer number (32401064236515).

Almost surely, 2^{64802128473029} is an apocalyptic number.

It is an amenable number.

64802128473029 is a deficient number, since it is larger than the sum of its proper divisors (1).

64802128473029 is an equidigital number, since it uses as much as digits as its factorization.

64802128473029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 64802128473029 in words is "sixty-four trillion, eight hundred two billion, one hundred twenty-eight million, four hundred seventy-three thousand, twenty-nine".