73386381533 has 4 divisors (see below), whose sum is σ = 73500513408. Its totient is φ = 73272249660.

The previous prime is 73386381521. The next prime is 73386381539. The reversal of 73386381533 is 33518368337.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33518368337 = 1907 ⋅17576491.

It is a cyclic number.

It is not a de Polignac number, because 73386381533 - 2¹² = 73386377437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73386381539) 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 in 3 ways as a sum of consecutive naturals, for example, 57064973 + ... + 57066258.

It is an arithmetic number, because the mean of its divisors is an integer number (18375128352).

Almost surely, 2^73386381533 is an apocalyptic number.

It is an amenable number.

73386381533 is a deficient number, since it is larger than the sum of its proper divisors (114131875).

73386381533 is a wasteful number, since it uses less digits than its factorization.

73386381533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114131874.

The product of its digits is 3265920, while the sum is 50.

The spelling of 73386381533 in words is "seventy-three billion, three hundred eighty-six million, three hundred eighty-one thousand, five hundred thirty-three".