73136394241 has 4 divisors (see below), whose sum is σ = 75658338900. Its totient is φ = 70614449584.

The previous prime is 73136394239. The next prime is 73136394301. The reversal of 73136394241 is 14249363137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14249363137 = 61 ⋅233596117.

It can be written as a sum of positive squares in 2 ways, for example, as 26350704241 + 46785690000 = 162329^2 + 216300^2 .

It is a cyclic number.

It is not a de Polignac number, because 73136394241 - 2¹ = 73136394239 is a prime.

It is a super-4 number, since 4×73136394241⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73136391241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1260972286 + ... + 1260972343.

It is an arithmetic number, because the mean of its divisors is an integer number (18914584725).

Almost surely, 2^73136394241 is an apocalyptic number.

It is an amenable number.

73136394241 is a deficient number, since it is larger than the sum of its proper divisors (2521944659).

73136394241 is a wasteful number, since it uses less digits than its factorization.

73136394241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521944658.

The product of its digits is 326592, while the sum is 43.

The spelling of 73136394241 in words is "seventy-three billion, one hundred thirty-six million, three hundred ninety-four thousand, two hundred forty-one".