71213173087073 has 16 divisors (see below), whose sum is σ = 72531629401920. Its totient is φ = 69904746261504.

The previous prime is 71213173087039. The next prime is 71213173087087. The reversal of 71213173087073 is 37078037131217.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71213173087073 is a prime.

It is a super-2 number, since 2×71213173087073² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71213173087033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10835198 + ... + 16119176.

It is an arithmetic number, because the mean of its divisors is an integer number (4533226837620).

Almost surely, 2^{71213173087073} is an apocalyptic number.

71213173087073 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

71213173087073 is a deficient number, since it is larger than the sum of its proper divisors (1318456314847).

71213173087073 is a wasteful number, since it uses less digits than its factorization.

71213173087073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5284928.

The product of its (nonzero) digits is 1037232, while the sum is 50.

The spelling of 71213173087073 in words is "seventy-one trillion, two hundred thirteen billion, one hundred seventy-three million, eighty-seven thousand, seventy-three".