168962407321 has 4 divisors (see below), whose sum is σ = 168975590500. Its totient is φ = 168949224144.

The previous prime is 168962407319. The next prime is 168962407337. The reversal of 168962407321 is 123704269861.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 94487997321 + 74474410000 = 307389^2 + 272900^2 .

It is a cyclic number.

It is not a de Polignac number, because 168962407321 - 2¹ = 168962407319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168962407351) 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 in 3 ways as a sum of consecutive naturals, for example, 6572346 + ... + 6598003.

It is an arithmetic number, because the mean of its divisors is an integer number (42243897625).

Almost surely, 2^168962407321 is an apocalyptic number.

It is an amenable number.

168962407321 is a deficient number, since it is larger than the sum of its proper divisors (13183179).

168962407321 is a wasteful number, since it uses less digits than its factorization.

168962407321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13183178.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 168962407321 in words is "one hundred sixty-eight billion, nine hundred sixty-two million, four hundred seven thousand, three hundred twenty-one".