68432222513638 has 4 divisors (see below), whose sum is σ = 102648333770460. Its totient is φ = 34216111256818.

The previous prime is 68432222513527. The next prime is 68432222513647. The reversal of 68432222513638 is 83631522223486.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17108055628408 + ... + 17108055628411.

It is an arithmetic number, because the mean of its divisors is an integer number (25662083442615).

Almost surely, 2^{68432222513638} is an apocalyptic number.

68432222513638 is a deficient number, since it is larger than the sum of its proper divisors (34216111256822).

68432222513638 is a wasteful number, since it uses less digits than its factorization.

68432222513638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34216111256821.

The product of its digits is 19906560, while the sum is 55.

The spelling of 68432222513638 in words is "sixty-eight trillion, four hundred thirty-two billion, two hundred twenty-two million, five hundred thirteen thousand, six hundred thirty-eight".