68167436081 has 8 divisors (see below), whose sum is σ = 71091815424. Its totient is φ = 65288396160.

The previous prime is 68167436053. The next prime is 68167436083. The reversal of 68167436081 is 18063476186.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68167436081 is a prime.

It is a super-2 number, since 2×68167436081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68167436083) 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, 11331785 + ... + 11337798.

It is an arithmetic number, because the mean of its divisors is an integer number (8886476928).

Almost surely, 2^68167436081 is an apocalyptic number.

It is an amenable number.

68167436081 is a deficient number, since it is larger than the sum of its proper divisors (2924379343).

68167436081 is a wasteful number, since it uses less digits than its factorization.

68167436081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22669711.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 68167436081 in words is "sixty-eight billion, one hundred sixty-seven million, four hundred thirty-six thousand, eighty-one".