73729717676138 has 16 divisors (see below), whose sum is σ = 111223487009544. Its totient is φ = 36655287540480.

The previous prime is 73729717676137. The next prime is 73729717676161. The reversal of 73729717676138 is 83167671792737.

It can be written as a sum of positive squares in 4 ways, for example, as 32903841298969 + 40825876377169 = 5736187^2 + 6389513^2 .

It is not an unprimeable number, because it can be changed into a prime (73729717676137) 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 in 7 ways as a sum of consecutive naturals, for example, 14129795 + ... + 18630902.

Almost surely, 2^{73729717676138} is an apocalyptic number.

73729717676138 is a deficient number, since it is larger than the sum of its proper divisors (37493769333406).

73729717676138 is a wasteful number, since it uses less digits than its factorization.

73729717676138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32767097.

The product of its digits is 784147392, while the sum is 74.

The spelling of 73729717676138 in words is "seventy-three trillion, seven hundred twenty-nine billion, seven hundred seventeen million, six hundred seventy-six thousand, one hundred thirty-eight".