64815383582063 has 2 divisors, whose sum is σ = 64815383582064. Its totient is φ = 64815383582062.

The previous prime is 64815383582051. The next prime is 64815383582083. The reversal of 64815383582063 is 36028538351846.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64815383582063 - 2¹⁸ = 64815383319919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64815383581987 and 64815383582005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64815383582023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32407691791031 + 32407691791032.

It is an arithmetic number, because the mean of its divisors is an integer number (32407691791032).

Almost surely, 2^{64815383582063} is an apocalyptic number.

64815383582063 is a deficient number, since it is larger than the sum of its proper divisors (1).

64815383582063 is an equidigital number, since it uses as much as digits as its factorization.

64815383582063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 99532800, while the sum is 62.

The spelling of 64815383582063 in words is "sixty-four trillion, eight hundred fifteen billion, three hundred eighty-three million, five hundred eighty-two thousand, sixty-three".