168377498897 has 4 divisors (see below), whose sum is σ = 170012232000. Its totient is φ = 166742765796.

The previous prime is 168377498893. The next prime is 168377498917. The reversal of 168377498897 is 798894773861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 168377498897 - 2² = 168377498893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168377498893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817366397 + ... + 817366602.

It is an arithmetic number, because the mean of its divisors is an integer number (42503058000).

Almost surely, 2^168377498897 is an apocalyptic number.

It is an amenable number.

168377498897 is a deficient number, since it is larger than the sum of its proper divisors (1634733103).

168377498897 is a wasteful number, since it uses less digits than its factorization.

168377498897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634733102.

The product of its digits is 1024192512, while the sum is 77.

The spelling of 168377498897 in words is "one hundred sixty-eight billion, three hundred seventy-seven million, four hundred ninety-eight thousand, eight hundred ninety-seven".