131565054352117 has 4 divisors (see below), whose sum is σ = 131565383189920. Its totient is φ = 131564725514316.

The previous prime is 131565054352091. The next prime is 131565054352133. The reversal of 131565054352117 is 711253450565131.

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 a de Polignac number, because none of the positive numbers 2^k-131565054352117 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 (131565054952117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163818033 + ... + 164619190.

It is an arithmetic number, because the mean of its divisors is an integer number (32891345797480).

Almost surely, 2^{131565054352117} is an apocalyptic number.

It is an amenable number.

131565054352117 is a deficient number, since it is larger than the sum of its proper divisors (328837803).

131565054352117 is an equidigital number, since it uses as much as digits as its factorization.

131565054352117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328837802.

The product of its (nonzero) digits is 1890000, while the sum is 49.

The spelling of 131565054352117 in words is "one hundred thirty-one trillion, five hundred sixty-five billion, fifty-four million, three hundred fifty-two thousand, one hundred seventeen".