168871457447 has 16 divisors (see below), whose sum is σ = 210830710272. Its totient is φ = 131407103520.

The previous prime is 168871457413. The next prime is 168871457467. The reversal of 168871457447 is 744754178861.

It is a happy number.

It is not a de Polignac number, because 168871457447 - 2⁶ = 168871457383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168871457447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168871457467) 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, 1452368 + ... + 1564325.

It is an arithmetic number, because the mean of its divisors is an integer number (13176919392).

Almost surely, 2^168871457447 is an apocalyptic number.

168871457447 is a deficient number, since it is larger than the sum of its proper divisors (41959252825).

168871457447 is a wasteful number, since it uses less digits than its factorization.

168871457447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017438.

The product of its digits is 42147840, while the sum is 62.

The spelling of 168871457447 in words is "one hundred sixty-eight billion, eight hundred seventy-one million, four hundred fifty-seven thousand, four hundred forty-seven".