168636212372 has 12 divisors (see below), whose sum is σ = 295379487060. Its totient is φ = 84242073216.

The previous prime is 168636212363. The next prime is 168636212399. The reversal of 168636212372 is 273212636861.

It can be written as a sum of positive squares in 2 ways, for example, as 34067561476 + 134568650896 = 184574^2 + 366836^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19003253 + ... + 19012124.

It is an arithmetic number, because the mean of its divisors is an integer number (24614957255).

Almost surely, 2^168636212372 is an apocalyptic number.

It is an amenable number.

168636212372 is a deficient number, since it is larger than the sum of its proper divisors (126743274688).

168636212372 is a wasteful number, since it uses less digits than its factorization.

168636212372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38016490 (or 38016488 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The spelling of 168636212372 in words is "one hundred sixty-eight billion, six hundred thirty-six million, two hundred twelve thousand, three hundred seventy-two".