64246699243 has 2 divisors, whose sum is σ = 64246699244. Its totient is φ = 64246699242.

The previous prime is 64246699241. The next prime is 64246699247. The reversal of 64246699243 is 34299664246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64246699243 - 2¹ = 64246699241 is a prime.

Together with 64246699241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64246699241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32123349621 + 32123349622.

It is an arithmetic number, because the mean of its divisors is an integer number (32123349622).

Almost surely, 2^64246699243 is an apocalyptic number.

64246699243 is a deficient number, since it is larger than the sum of its proper divisors (1).

64246699243 is an equidigital number, since it uses as much as digits as its factorization.

64246699243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13436928, while the sum is 55.

The spelling of 64246699243 in words is "sixty-four billion, two hundred forty-six million, six hundred ninety-nine thousand, two hundred forty-three".