168921238431098 has 16 divisors (see below), whose sum is σ = 257925273932040. Its totient is φ = 82950336532800.

The previous prime is 168921238431097. The next prime is 168921238431139. The reversal of 168921238431098 is 890134832129861.

168921238431098 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 87370278700849 + 81550959730249 = 9347207^2 + 9030557^2 .

It is not an unprimeable number, because it can be changed into a prime (168921238431097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1047272093 + ... + 1047433376.

Almost surely, 2^{168921238431098} is an apocalyptic number.

168921238431098 is a deficient number, since it is larger than the sum of its proper divisors (89004035500942).

168921238431098 is a wasteful number, since it uses less digits than its factorization.

168921238431098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094706193.

The product of its (nonzero) digits is 35831808, while the sum is 65.

The spelling of 168921238431098 in words is "one hundred sixty-eight trillion, nine hundred twenty-one billion, two hundred thirty-eight million, four hundred thirty-one thousand, ninety-eight".