43144560073 has 2 divisors, whose sum is σ = 43144560074. Its totient is φ = 43144560072.

The previous prime is 43144560037. The next prime is 43144560101. The reversal of 43144560073 is 37006544134.

Together with previous prime (43144560037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40277278864 + 2867281209 = 200692^2 + 53547^2 .

It is a cyclic number.

It is not a de Polignac number, because 43144560073 - 2¹⁷ = 43144429001 is a prime.

It is a super-2 number, since 2×43144560073² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43144567073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21572280036 + 21572280037.

It is an arithmetic number, because the mean of its divisors is an integer number (21572280037).

Almost surely, 2^43144560073 is an apocalyptic number.

It is an amenable number.

43144560073 is a deficient number, since it is larger than the sum of its proper divisors (1).

43144560073 is an equidigital number, since it uses as much as digits as its factorization.

43144560073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 43144560073 in words is "forty-three billion, one hundred forty-four million, five hundred sixty thousand, seventy-three".