68187513161 has 8 divisors (see below), whose sum is σ = 68548537344. Its totient is φ = 67826568960.

The previous prime is 68187513127. The next prime is 68187513167. The reversal of 68187513161 is 16131578186.

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

It is a cyclic number.

It is not a de Polignac number, because 68187513161 - 2³⁰ = 67113771337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68187513167) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2566616 + ... + 2593046.

It is an arithmetic number, because the mean of its divisors is an integer number (8568567168).

Almost surely, 2^68187513161 is an apocalyptic number.

It is an amenable number.

68187513161 is a deficient number, since it is larger than the sum of its proper divisors (361024183).

68187513161 is a wasteful number, since it uses less digits than its factorization.

68187513161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39991.

The product of its digits is 241920, while the sum is 47.

The spelling of 68187513161 in words is "sixty-eight billion, one hundred eighty-seven million, five hundred thirteen thousand, one hundred sixty-one".