73381526893 has 2 divisors, whose sum is σ = 73381526894. Its totient is φ = 73381526892.

The previous prime is 73381526863. The next prime is 73381526909. The reversal of 73381526893 is 39862518337.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56569292649 + 16812234244 = 237843^2 + 129662^2 .

It is a cyclic number.

It is not a de Polignac number, because 73381526893 - 2⁵ = 73381526861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73381526863) 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, 36690763446 + 36690763447.

It is an arithmetic number, because the mean of its divisors is an integer number (36690763447).

Almost surely, 2^73381526893 is an apocalyptic number.

It is an amenable number.

73381526893 is a deficient number, since it is larger than the sum of its proper divisors (1).

73381526893 is an equidigital number, since it uses as much as digits as its factorization.

73381526893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 55.

The spelling of 73381526893 in words is "seventy-three billion, three hundred eighty-one million, five hundred twenty-six thousand, eight hundred ninety-three".