73343685637 has 2 divisors, whose sum is σ = 73343685638. Its totient is φ = 73343685636.

The previous prime is 73343685619. The next prime is 73343685671. The reversal of 73343685637 is 73658634337.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56719709281 + 16623976356 = 238159^2 + 128934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73343685637 is a prime.

It is a super-3 number, since 3×73343685637³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73343685607) 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, 36671842818 + 36671842819.

It is an arithmetic number, because the mean of its divisors is an integer number (36671842819).

Almost surely, 2^73343685637 is an apocalyptic number.

It is an amenable number.

73343685637 is a deficient number, since it is larger than the sum of its proper divisors (1).

73343685637 is an equidigital number, since it uses as much as digits as its factorization.

73343685637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22861440, while the sum is 55.

The spelling of 73343685637 in words is "seventy-three billion, three hundred forty-three million, six hundred eighty-five thousand, six hundred thirty-seven".