168135065702438 has 16 divisors (see below), whose sum is σ = 252328994406720. Its totient is φ = 84025411454400.

The previous prime is 168135065702431. The next prime is 168135065702453. The reversal of 168135065702438 is 834207560531861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168135065702431) 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, 29275028 + ... + 34544136.

It is an arithmetic number, because the mean of its divisors is an integer number (15770562150420).

Almost surely, 2^{168135065702438} is an apocalyptic number.

168135065702438 is a deficient number, since it is larger than the sum of its proper divisors (84193928704282).

168135065702438 is a wasteful number, since it uses less digits than its factorization.

168135065702438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277103.

The product of its (nonzero) digits is 29030400, while the sum is 59.

The spelling of 168135065702438 in words is "one hundred sixty-eight trillion, one hundred thirty-five billion, sixty-five million, seven hundred two thousand, four hundred thirty-eight".