168432855071231 has 16 divisors (see below), whose sum is σ = 173257876938240. Its totient is φ = 163662541183680.

The previous prime is 168432855071207. The next prime is 168432855071233. The reversal of 168432855071231 is 132170558234861.

It is a cyclic number.

It is not a de Polignac number, because 168432855071231 - 2⁴² = 164034808560127 is a prime.

It is a super-2 number, since 2×168432855071231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168432855071233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11033285 + ... + 21414926.

It is an arithmetic number, because the mean of its divisors is an integer number (10828617308640).

Almost surely, 2^{168432855071231} is an apocalyptic number.

168432855071231 is a deficient number, since it is larger than the sum of its proper divisors (4825021867009).

168432855071231 is a wasteful number, since it uses less digits than its factorization.

168432855071231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32449054.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 168432855071231 in words is "one hundred sixty-eight trillion, four hundred thirty-two billion, eight hundred fifty-five million, seventy-one thousand, two hundred thirty-one".