73051052909 has 4 divisors (see below), whose sum is σ = 74429374716. Its totient is φ = 71672731104.

The previous prime is 73051052849. The next prime is 73051052929. The reversal of 73051052909 is 90925015037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90925015037 = 61 ⋅1490574017.

It can be written as a sum of positive squares in 2 ways, for example, as 52886200900 + 20164852009 = 229970^2 + 142003^2 .

It is a cyclic number.

It is not a de Polignac number, because 73051052909 - 2¹² = 73051048813 is a prime.

It is a super-2 number, since 2×73051052909² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73051052929) 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, 689160824 + ... + 689160929.

It is an arithmetic number, because the mean of its divisors is an integer number (18607343679).

Almost surely, 2^73051052909 is an apocalyptic number.

It is an amenable number.

73051052909 is a deficient number, since it is larger than the sum of its proper divisors (1378321807).

73051052909 is a wasteful number, since it uses less digits than its factorization.

73051052909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378321806.

The product of its (nonzero) digits is 85050, while the sum is 41.

The spelling of 73051052909 in words is "seventy-three billion, fifty-one million, fifty-two thousand, nine hundred nine".