13537447073 has 2 divisors, whose sum is σ = 13537447074. Its totient is φ = 13537447072.

The previous prime is 13537447061. The next prime is 13537447081. The reversal of 13537447073 is 37074473531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9396781969 + 4140665104 = 96937^2 + 64348^2 .

It is an emirp because it is prime and its reverse (37074473531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13537447073 - 2¹² = 13537442977 is a prime.

It is not a weakly prime, because it can be changed into another prime (13537447043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6768723536 + 6768723537.

It is an arithmetic number, because the mean of its divisors is an integer number (6768723537).

Almost surely, 2^13537447073 is an apocalyptic number.

It is an amenable number.

13537447073 is a deficient number, since it is larger than the sum of its proper divisors (1).

13537447073 is an equidigital number, since it uses as much as digits as its factorization.

13537447073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 740880, while the sum is 44.

The spelling of 13537447073 in words is "thirteen billion, five hundred thirty-seven million, four hundred forty-seven thousand, seventy-three".