151548668197 has 4 divisors (see below), whose sum is σ = 160463295756. Its totient is φ = 142634040640.

The previous prime is 151548668191. The next prime is 151548668233. The reversal of 151548668197 is 791866845151.

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 121103304001 + 30445364196 = 347999^2 + 174486^2 .

It is a cyclic number.

It is not a de Polignac number, because 151548668197 - 2³ = 151548668189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151548668191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4457313754 + ... + 4457313787.

It is an arithmetic number, because the mean of its divisors is an integer number (40115823939).

Almost surely, 2^151548668197 is an apocalyptic number.

151548668197 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

151548668197 is a deficient number, since it is larger than the sum of its proper divisors (8914627559).

151548668197 is an equidigital number, since it uses as much as digits as its factorization.

151548668197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8914627558.

The product of its digits is 14515200, while the sum is 61.

The spelling of 151548668197 in words is "one hundred fifty-one billion, five hundred forty-eight million, six hundred sixty-eight thousand, one hundred ninety-seven".