71192457611 has 6 divisors (see below), whose sum is σ = 77665464612. Its totient is φ = 64719611520.

The previous prime is 71192457593. The next prime is 71192457619. The reversal of 71192457611 is 11675429117.

It is a de Polignac number, because none of the positive numbers 2^k-71192457611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71192457619) 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 5 ways as a sum of consecutive naturals, for example, 844715 + ... + 925163.

It is an arithmetic number, because the mean of its divisors is an integer number (12944244102).

Almost surely, 2^71192457611 is an apocalyptic number.

71192457611 is a deficient number, since it is larger than the sum of its proper divisors (6473007001).

71192457611 is an frugal number, since it uses more digits than its factorization.

71192457611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160909 (or 80460 counting only the distinct ones).

The product of its digits is 105840, while the sum is 44.

Multiplying 71192457611 by its sum of digits (44), we get a square (3132468134884 = 1769878²).

The spelling of 71192457611 in words is "seventy-one billion, one hundred ninety-two million, four hundred fifty-seven thousand, six hundred eleven".