168135226048078 has 4 divisors (see below), whose sum is σ = 252202839072120. Its totient is φ = 84067613024038.

The previous prime is 168135226048073. The next prime is 168135226048147. The reversal of 168135226048078 is 870840622531861.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168135226048073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42033806512018 + ... + 42033806512021.

It is an arithmetic number, because the mean of its divisors is an integer number (63050709768030).

Almost surely, 2^{168135226048078} is an apocalyptic number.

168135226048078 is a deficient number, since it is larger than the sum of its proper divisors (84067613024042).

168135226048078 is an equidigital number, since it uses as much as digits as its factorization.

168135226048078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84067613024041.

The product of its (nonzero) digits is 30965760, while the sum is 61.

The spelling of 168135226048078 in words is "one hundred sixty-eight trillion, one hundred thirty-five billion, two hundred twenty-six million, forty-eight thousand, seventy-eight".