131445407573 has 2 divisors, whose sum is σ = 131445407574. Its totient is φ = 131445407572.

The previous prime is 131445407539. The next prime is 131445407623. The reversal of 131445407573 is 375704544131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127336212964 + 4109194609 = 356842^2 + 64103^2 .

It is a cyclic number.

It is not a de Polignac number, because 131445407573 - 2²² = 131441213269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131445437573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65722703786 + 65722703787.

It is an arithmetic number, because the mean of its divisors is an integer number (65722703787).

Almost surely, 2^131445407573 is an apocalyptic number.

It is an amenable number.

131445407573 is a deficient number, since it is larger than the sum of its proper divisors (1).

131445407573 is an equidigital number, since it uses as much as digits as its factorization.

131445407573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 131445407573 in words is "one hundred thirty-one billion, four hundred forty-five million, four hundred seven thousand, five hundred seventy-three".