68224643699 has 4 divisors (see below), whose sum is σ = 71815414440. Its totient is φ = 64633872960.

The previous prime is 68224643689. The next prime is 68224643701. The reversal of 68224643699 is 99634642286.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68224643699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68224643639) 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 in 3 ways as a sum of consecutive naturals, for example, 1795385342 + ... + 1795385379.

It is an arithmetic number, because the mean of its divisors is an integer number (17953853610).

Almost surely, 2^68224643699 is an apocalyptic number.

68224643699 is a deficient number, since it is larger than the sum of its proper divisors (3590770741).

68224643699 is a wasteful number, since it uses less digits than its factorization.

68224643699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3590770740.

The product of its digits is 26873856, while the sum is 59.

The spelling of 68224643699 in words is "sixty-eight billion, two hundred twenty-four million, six hundred forty-three thousand, six hundred ninety-nine".