168072152238 has 24 divisors (see below), whose sum is σ = 364411218600. Its totient is φ = 55984837104.

The previous prime is 168072152221. The next prime is 168072152257. The reversal of 168072152238 is 832251270861.

168072152238 is a `hidden beast` number, since 16 + 80 + 7 + 2 + 1 + 522 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 168072152193 and 168072152202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3241368 + ... + 3292811.

It is an arithmetic number, because the mean of its divisors is an integer number (15183800775).

Almost surely, 2^168072152238 is an apocalyptic number.

168072152238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

168072152238 is an abundant number, since it is smaller than the sum of its proper divisors (196339066362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168072152238 is a wasteful number, since it uses less digits than its factorization.

168072152238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6535616 (or 6535613 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 168072152238 in words is "one hundred sixty-eight billion, seventy-two million, one hundred fifty-two thousand, two hundred thirty-eight".