73405037473 has 2 divisors, whose sum is σ = 73405037474. Its totient is φ = 73405037472.

The previous prime is 73405037417. The next prime is 73405037479. The reversal of 73405037473 is 37473050437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65089786129 + 8315251344 = 255127^2 + 91188^2 .

It is a cyclic number.

It is not a de Polignac number, because 73405037473 - 2¹³ = 73405029281 is a prime.

It is not a weakly prime, because it can be changed into another prime (73405037479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36702518736 + 36702518737.

It is an arithmetic number, because the mean of its divisors is an integer number (36702518737).

Almost surely, 2^73405037473 is an apocalyptic number.

It is an amenable number.

73405037473 is a deficient number, since it is larger than the sum of its proper divisors (1).

73405037473 is an equidigital number, since it uses as much as digits as its factorization.

73405037473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 740880, while the sum is 43.

The spelling of 73405037473 in words is "seventy-three billion, four hundred five million, thirty-seven thousand, four hundred seventy-three".