73388288338 has 4 divisors (see below), whose sum is σ = 110082432510. Its totient is φ = 36694144168.

The previous prime is 73388288269. The next prime is 73388288353. The reversal of 73388288338 is 83388288337.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83388288337 = 1289 ⋅64692233.

It can be written as a sum of positive squares in only one way, i.e., 72869223249 + 519065089 = 269943^2 + 22783^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18347072083 + ... + 18347072086.

Almost surely, 2^73388288338 is an apocalyptic number.

73388288338 is a deficient number, since it is larger than the sum of its proper divisors (36694144172).

73388288338 is a wasteful number, since it uses less digits than its factorization.

73388288338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36694144171.

The product of its digits is 37158912, while the sum is 61.

Subtracting 73388288338 from its reverse (83388288337), we obtain a palindrome (9999999999).

The spelling of 73388288338 in words is "seventy-three billion, three hundred eighty-eight million, two hundred eighty-eight thousand, three hundred thirty-eight".