73883389035721 has 2 divisors, whose sum is σ = 73883389035722. Its totient is φ = 73883389035720.

The previous prime is 73883389035719. The next prime is 73883389035737. The reversal of 73883389035721 is 12753098338837.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59992382975625 + 13891006060096 = 7745475^2 + 3727064^2 .

It is a cyclic number.

It is not a de Polignac number, because 73883389035721 - 2¹ = 73883389035719 is a prime.

Together with 73883389035719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73883389035791) 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, 36941694517860 + 36941694517861.

It is an arithmetic number, because the mean of its divisors is an integer number (36941694517861).

Almost surely, 2^{73883389035721} is an apocalyptic number.

It is an amenable number.

73883389035721 is a deficient number, since it is larger than the sum of its proper divisors (1).

73883389035721 is an equidigital number, since it uses as much as digits as its factorization.

73883389035721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 182891520, while the sum is 67.

The spelling of 73883389035721 in words is "seventy-three trillion, eight hundred eighty-three billion, three hundred eighty-nine million, thirty-five thousand, seven hundred twenty-one".