131445437573 has 2 divisors, whose sum is σ = 131445437574. Its totient is φ = 131445437572.

The previous prime is 131445437533. The next prime is 131445437611. The reversal of 131445437573 is 375734544131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91069357729 + 40376079844 = 301777^2 + 200938^2 .

It is a cyclic number.

It is not a de Polignac number, because 131445437573 - 2²⁴ = 131428660357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131445437533) 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 as a sum of consecutive naturals, namely, 65722718786 + 65722718787.

It is an arithmetic number, because the mean of its divisors is an integer number (65722718787).

Almost surely, 2^131445437573 is an apocalyptic number.

It is an amenable number.

131445437573 is a deficient number, since it is larger than the sum of its proper divisors (1).

131445437573 is an equidigital number, since it uses as much as digits as its factorization.

131445437573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 47.

The spelling of 131445437573 in words is "one hundred thirty-one billion, four hundred forty-five million, four hundred thirty-seven thousand, five hundred seventy-three".