68198534141 has 4 divisors (see below), whose sum is σ = 68210296284. Its totient is φ = 68186772000.

The previous prime is 68198534137. The next prime is 68198534147. The reversal of 68198534141 is 14143589186.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64785520900 + 3413013241 = 254530^2 + 58421^2 .

It is a cyclic number.

It is not a de Polignac number, because 68198534141 - 2² = 68198534137 is a prime.

It is a super-2 number, since 2×68198534141² (a number of 22 digits) contains 22 as substring.

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 68198534141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68198534147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5872370 + ... + 5883971.

It is an arithmetic number, because the mean of its divisors is an integer number (17052574071).

Almost surely, 2^68198534141 is an apocalyptic number.

It is an amenable number.

68198534141 is a deficient number, since it is larger than the sum of its proper divisors (11762143).

68198534141 is a wasteful number, since it uses less digits than its factorization.

68198534141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11762142.

The product of its digits is 829440, while the sum is 50.

The spelling of 68198534141 in words is "sixty-eight billion, one hundred ninety-eight million, five hundred thirty-four thousand, one hundred forty-one".