68185645334 has 4 divisors (see below), whose sum is σ = 102278468004. Its totient is φ = 34092822666.

The previous prime is 68185645291. The next prime is 68185645373. The reversal of 68185645334 is 43354658186.

It is a happy number.

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

It is a super-2 number, since 2×68185645334² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17046411332 + ... + 17046411335.

It is an arithmetic number, because the mean of its divisors is an integer number (25569617001).

Almost surely, 2^68185645334 is an apocalyptic number.

68185645334 is a deficient number, since it is larger than the sum of its proper divisors (34092822670).

68185645334 is a wasteful number, since it uses less digits than its factorization.

68185645334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34092822669.

The product of its digits is 8294400, while the sum is 53.

The spelling of 68185645334 in words is "sixty-eight billion, one hundred eighty-five million, six hundred forty-five thousand, three hundred thirty-four".