71246188139 has 4 divisors (see below), whose sum is σ = 81424215024. Its totient is φ = 61068161256.

The previous prime is 71246188133. The next prime is 71246188193. The reversal of 71246188139 is 93188164217.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71246188139 - 2²⁸ = 70977752683 is a prime.

It is a super-3 number, since 3×71246188139³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71246188133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5089013432 + ... + 5089013445.

It is an arithmetic number, because the mean of its divisors is an integer number (20356053756).

Almost surely, 2^71246188139 is an apocalyptic number.

71246188139 is a deficient number, since it is larger than the sum of its proper divisors (10178026885).

71246188139 is a wasteful number, since it uses less digits than its factorization.

71246188139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10178026884.

The product of its digits is 580608, while the sum is 50.

The spelling of 71246188139 in words is "seventy-one billion, two hundred forty-six million, one hundred eighty-eight thousand, one hundred thirty-nine".