131345500355551 has 4 divisors (see below), whose sum is σ = 131934493630912. Its totient is φ = 130756507080192.

The previous prime is 131345500355533. The next prime is 131345500355651. The reversal of 131345500355551 is 155553005543131.

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

It is a cyclic number.

It is not a de Polignac number, because 131345500355551 - 2¹³ = 131345500347359 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 (131345500355651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294496637346 + ... + 294496637791.

It is an arithmetic number, because the mean of its divisors is an integer number (32983623407728).

Almost surely, 2^{131345500355551} is an apocalyptic number.

131345500355551 is a deficient number, since it is larger than the sum of its proper divisors (588993275361).

131345500355551 is an equidigital number, since it uses as much as digits as its factorization.

131345500355551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588993275360.

The product of its (nonzero) digits is 1687500, while the sum is 46.

Adding to 131345500355551 its reverse (155553005543131), we get a palindrome (286898505898682).

The spelling of 131345500355551 in words is "one hundred thirty-one trillion, three hundred forty-five billion, five hundred million, three hundred fifty-five thousand, five hundred fifty-one".