73086711581 has 24 divisors (see below), whose sum is σ = 81089759520. Its totient is φ = 65807816256.

The previous prime is 73086711539. The next prime is 73086711587. The reversal of 73086711581 is 18511768037.

It is a de Polignac number, because none of the positive numbers 2^k-73086711581 is a prime.

It is a super-2 number, since 2×73086711581² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73086711587) 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 23 ways as a sum of consecutive naturals, for example, 5785490 + ... + 5798108.

It is an arithmetic number, because the mean of its divisors is an integer number (3378739980).

Almost surely, 2^73086711581 is an apocalyptic number.

It is an amenable number.

73086711581 is a deficient number, since it is larger than the sum of its proper divisors (8003047939).

73086711581 is a wasteful number, since it uses less digits than its factorization.

73086711581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13485 (or 13472 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 47.

The spelling of 73086711581 in words is "seventy-three billion, eighty-six million, seven hundred eleven thousand, five hundred eighty-one".