43454545373 has 2 divisors, whose sum is σ = 43454545374. Its totient is φ = 43454545372.

The previous prime is 43454545307. The next prime is 43454545411. The reversal of 43454545373 is 37354545434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43313101924 + 141443449 = 208118^2 + 11893^2 .

It is a cyclic number.

It is not a de Polignac number, because 43454545373 - 2⁸ = 43454545117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43454547373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21727272686 + 21727272687.

It is an arithmetic number, because the mean of its divisors is an integer number (21727272687).

Almost surely, 2^43454545373 is an apocalyptic number.

It is an amenable number.

43454545373 is a deficient number, since it is larger than the sum of its proper divisors (1).

43454545373 is an equidigital number, since it uses as much as digits as its factorization.

43454545373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048000, while the sum is 47.

The spelling of 43454545373 in words is "forty-three billion, four hundred fifty-four million, five hundred forty-five thousand, three hundred seventy-three".