68100144081 has 4 divisors (see below), whose sum is σ = 90800192112. Its totient is φ = 45400096052.

The previous prime is 68100144061. The next prime is 68100144143. The reversal of 68100144081 is 18044100186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68100144081 - 2⁶ = 68100144017 is a prime.

It is a super-2 number, since 2×68100144081² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68100144061) 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, 11350024011 + ... + 11350024016.

It is an arithmetic number, because the mean of its divisors is an integer number (22700048028).

Almost surely, 2^68100144081 is an apocalyptic number.

It is an amenable number.

68100144081 is a deficient number, since it is larger than the sum of its proper divisors (22700048031).

68100144081 is a wasteful number, since it uses less digits than its factorization.

68100144081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22700048030.

The product of its (nonzero) digits is 6144, while the sum is 33.

The spelling of 68100144081 in words is "sixty-eight billion, one hundred million, one hundred forty-four thousand, eighty-one".