168138400748011 has 8 divisors (see below), whose sum is σ = 168580358465904. Its totient is φ = 167696847571680.

The previous prime is 168138400747943. The next prime is 168138400748029. The reversal of 168138400748011 is 110847004831861.

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 168138400748011 - 2⁷ = 168138400747883 is a prime.

It is a super-2 number, since 2×168138400748011² (a number of 29 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 168138400748011.

It is not an unprimeable number, because it can be changed into a prime (168138400748041) 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, 100303036 + ... + 101965561.

It is an arithmetic number, because the mean of its divisors is an integer number (21072544808238).

Almost surely, 2^{168138400748011} is an apocalyptic number.

168138400748011 is a deficient number, since it is larger than the sum of its proper divisors (441957717893).

168138400748011 is a wasteful number, since it uses less digits than its factorization.

168138400748011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202270781.

The product of its (nonzero) digits is 1032192, while the sum is 52.

The spelling of 168138400748011 in words is "one hundred sixty-eight trillion, one hundred thirty-eight billion, four hundred million, seven hundred forty-eight thousand, eleven".