168307126418 has 4 divisors (see below), whose sum is σ = 252460689630. Its totient is φ = 84153563208.

The previous prime is 168307126411. The next prime is 168307126441. The reversal of 168307126418 is 814621703861.

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

It can be written as a sum of positive squares in only one way, i.e., 165740994769 + 2566131649 = 407113^2 + 50657^2 .

It is not an unprimeable number, because it can be changed into a prime (168307126411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42076781603 + ... + 42076781606.

Almost surely, 2^168307126418 is an apocalyptic number.

168307126418 is a deficient number, since it is larger than the sum of its proper divisors (84153563212).

168307126418 is an equidigital number, since it uses as much as digits as its factorization.

168307126418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84153563211.

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 168307126418 in words is "one hundred sixty-eight billion, three hundred seven million, one hundred twenty-six thousand, four hundred eighteen".