13423540440073 has 2 divisors, whose sum is σ = 13423540440074. Its totient is φ = 13423540440072.

The previous prime is 13423540439987. The next prime is 13423540440103. The reversal of 13423540440073 is 37004404532431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8024483893504 + 5399056546569 = 2832752^2 + 2323587^2 .

It is a cyclic number.

It is not a de Polignac number, because 13423540440073 - 2¹³ = 13423540431881 is a prime.

It is not a weakly prime, because it can be changed into another prime (13423540440773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6711770220036 + 6711770220037.

It is an arithmetic number, because the mean of its divisors is an integer number (6711770220037).

Almost surely, 2^{13423540440073} is an apocalyptic number.

It is an amenable number.

13423540440073 is a deficient number, since it is larger than the sum of its proper divisors (1).

13423540440073 is an equidigital number, since it uses as much as digits as its factorization.

13423540440073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 40.

The spelling of 13423540440073 in words is "thirteen trillion, four hundred twenty-three billion, five hundred forty million, four hundred forty thousand, seventy-three".