168137636385279 has 16 divisors (see below), whose sum is σ = 244573969901184. Its totient is φ = 101897374826400.

The previous prime is 168137636385217. The next prime is 168137636385337. The reversal of 168137636385279 is 972583636731861.

It is not a de Polignac number, because 168137636385279 - 2¹¹ = 168137636383231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168137636385279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168137636385209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104766117 + ... + 106358894.

It is an arithmetic number, because the mean of its divisors is an integer number (15285873118824).

Almost surely, 2^{168137636385279} is an apocalyptic number.

168137636385279 is a deficient number, since it is larger than the sum of its proper divisors (76436333515905).

168137636385279 is a wasteful number, since it uses less digits than its factorization.

168137636385279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211149158.

The product of its digits is 1646023680, while the sum is 75.

The spelling of 168137636385279 in words is "one hundred sixty-eight trillion, one hundred thirty-seven billion, six hundred thirty-six million, three hundred eighty-five thousand, two hundred seventy-nine".