68165244256187 has 8 divisors (see below), whose sum is σ = 74793794859504. Its totient is φ = 61734560835168.

The previous prime is 68165244256169. The next prime is 68165244256201. The reversal of 68165244256187 is 78165244256186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68165244256187 - 2²² = 68165240061883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68165244256787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49466794853 + ... + 49466796230.

It is an arithmetic number, because the mean of its divisors is an integer number (9349224357438).

Almost surely, 2^{68165244256187} is an apocalyptic number.

68165244256187 is a deficient number, since it is larger than the sum of its proper divisors (6628550603317).

68165244256187 is a wasteful number, since it uses less digits than its factorization.

68165244256187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98933591149.

The product of its digits is 154828800, while the sum is 65.

Subtracting 68165244256187 from its reverse (78165244256186), we obtain a palindrome (9999999999999).

The spelling of 68165244256187 in words is "sixty-eight trillion, one hundred sixty-five billion, two hundred forty-four million, two hundred fifty-six thousand, one hundred eighty-seven".