73847474773 has 2 divisors, whose sum is σ = 73847474774. Its totient is φ = 73847474772.

The previous prime is 73847474707. The next prime is 73847474803. The reversal of 73847474773 is 37747474837.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72834134884 + 1013339889 = 269878^2 + 31833^2 .

It is an emirp because it is prime and its reverse (37747474837) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73847474773 - 2³³ = 65257540181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73847471773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36923737386 + 36923737387.

It is an arithmetic number, because the mean of its divisors is an integer number (36923737387).

Almost surely, 2^73847474773 is an apocalyptic number.

It is an amenable number.

73847474773 is a deficient number, since it is larger than the sum of its proper divisors (1).

73847474773 is an equidigital number, since it uses as much as digits as its factorization.

73847474773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77446656, while the sum is 61.

The spelling of 73847474773 in words is "seventy-three billion, eight hundred forty-seven million, four hundred seventy-four thousand, seven hundred seventy-three".