68206421161 has 8 divisors (see below), whose sum is σ = 68842483200. Its totient is φ = 67573193040.

The previous prime is 68206421137. The next prime is 68206421167. The reversal of 68206421161 is 16112460286.

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 68206421161 - 2⁷ = 68206421033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68206421161.

It is not an unprimeable number, because it can be changed into a prime (68206421167) 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, 660105 + ... + 756406.

It is an arithmetic number, because the mean of its divisors is an integer number (8605310400).

Almost surely, 2^68206421161 is an apocalyptic number.

It is an amenable number.

68206421161 is a deficient number, since it is larger than the sum of its proper divisors (636062039).

68206421161 is a wasteful number, since it uses less digits than its factorization.

68206421161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416959.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 68206421161 in words is "sixty-eight billion, two hundred six million, four hundred twenty-one thousand, one hundred sixty-one".