64839107471 has 2 divisors, whose sum is σ = 64839107472. Its totient is φ = 64839107470.

The previous prime is 64839107449. The next prime is 64839107477. The reversal of 64839107471 is 17470193846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64839107471 - 2¹⁴ = 64839091087 is a prime.

It is a super-3 number, since 3×64839107471³ (a number of 33 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64839107477) 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, 32419553735 + 32419553736.

It is an arithmetic number, because the mean of its divisors is an integer number (32419553736).

Almost surely, 2^64839107471 is an apocalyptic number.

64839107471 is a deficient number, since it is larger than the sum of its proper divisors (1).

64839107471 is an equidigital number, since it uses as much as digits as its factorization.

64839107471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 64839107471 in words is "sixty-four billion, eight hundred thirty-nine million, one hundred seven thousand, four hundred seventy-one".