43132321373 has 2 divisors, whose sum is σ = 43132321374. Its totient is φ = 43132321372.

The previous prime is 43132321357. The next prime is 43132321459. The reversal of 43132321373 is 37312323134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40474197124 + 2658124249 = 201182^2 + 51557^2 .

It is a cyclic number.

It is not a de Polignac number, because 43132321373 - 2⁴ = 43132321357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43132321313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21566160686 + 21566160687.

It is an arithmetic number, because the mean of its divisors is an integer number (21566160687).

Almost surely, 2^43132321373 is an apocalyptic number.

It is an amenable number.

43132321373 is a deficient number, since it is larger than the sum of its proper divisors (1).

43132321373 is an equidigital number, since it uses as much as digits as its factorization.

43132321373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 32.

The spelling of 43132321373 in words is "forty-three billion, one hundred thirty-two million, three hundred twenty-one thousand, three hundred seventy-three".