64449966711199 has 4 divisors (see below), whose sum is σ = 64545166071864. Its totient is φ = 64354767350536.

The previous prime is 64449966711197. The next prime is 64449966711203. The reversal of 64449966711199 is 99111766994446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64449966711199 - 2¹ = 64449966711197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64449966711197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47599679317 + ... + 47599680670.

It is an arithmetic number, because the mean of its divisors is an integer number (16136291517966).

Almost surely, 2^{64449966711199} is an apocalyptic number.

64449966711199 is a deficient number, since it is larger than the sum of its proper divisors (95199360665).

64449966711199 is an equidigital number, since it uses as much as digits as its factorization.

64449966711199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95199360664.

The product of its digits is 634894848, while the sum is 76.

The spelling of 64449966711199 in words is "sixty-four trillion, four hundred forty-nine billion, nine hundred sixty-six million, seven hundred eleven thousand, one hundred ninety-nine".