73494437777 has 2 divisors, whose sum is σ = 73494437778. Its totient is φ = 73494437776.

The previous prime is 73494437747. The next prime is 73494437837. The reversal of 73494437777 is 77773449437.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56531719696 + 16962718081 = 237764^2 + 130241^2 .

It is an emirp because it is prime and its reverse (77773449437) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73494437777 - 2¹² = 73494433681 is a prime.

It is not a weakly prime, because it can be changed into another prime (73494437707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36747218888 + 36747218889.

It is an arithmetic number, because the mean of its divisors is an integer number (36747218889).

Almost surely, 2^73494437777 is an apocalyptic number.

It is an amenable number.

73494437777 is a deficient number, since it is larger than the sum of its proper divisors (1).

73494437777 is an equidigital number, since it uses as much as digits as its factorization.

73494437777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87127488, while the sum is 62.

The spelling of 73494437777 in words is "seventy-three billion, four hundred ninety-four million, four hundred thirty-seven thousand, seven hundred seventy-seven".