73340673421 has 2 divisors, whose sum is σ = 73340673422. Its totient is φ = 73340673420.

The previous prime is 73340673397. The next prime is 73340673443. The reversal of 73340673421 is 12437604337.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72140050921 + 1200622500 = 268589^2 + 34650^2 .

It is an emirp because it is prime and its reverse (12437604337) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73340673421 - 2⁵ = 73340673389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73340473421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36670336710 + 36670336711.

It is an arithmetic number, because the mean of its divisors is an integer number (36670336711).

Almost surely, 2^73340673421 is an apocalyptic number.

It is an amenable number.

73340673421 is a deficient number, since it is larger than the sum of its proper divisors (1).

73340673421 is an equidigital number, since it uses as much as digits as its factorization.

73340673421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 40.

The spelling of 73340673421 in words is "seventy-three billion, three hundred forty million, six hundred seventy-three thousand, four hundred twenty-one".