73113831181 has 2 divisors, whose sum is σ = 73113831182. Its totient is φ = 73113831180.

The previous prime is 73113831179. The next prime is 73113831187. The reversal of 73113831181 is 18113831137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66858444900 + 6255386281 = 258570^2 + 79091^2 .

It is a cyclic number.

It is not a de Polignac number, because 73113831181 - 2¹ = 73113831179 is a prime.

It is a super-2 number, since 2×73113831181² (a number of 23 digits) contains 22 as substring.

Together with 73113831179, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 73113831181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73113831187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36556915590 + 36556915591.

It is an arithmetic number, because the mean of its divisors is an integer number (36556915591).

Almost surely, 2^73113831181 is an apocalyptic number.

It is an amenable number.

73113831181 is a deficient number, since it is larger than the sum of its proper divisors (1).

73113831181 is an equidigital number, since it uses as much as digits as its factorization.

73113831181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 37.

The spelling of 73113831181 in words is "seventy-three billion, one hundred thirteen million, eight hundred thirty-one thousand, one hundred eighty-one".