71379213239 has 4 divisors (see below), whose sum is σ = 71380381800. Its totient is φ = 71378044680.

The previous prime is 71379213221. The next prime is 71379213247. The reversal of 71379213239 is 93231297317.

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 71379213239 - 2²⁴ = 71362436023 is a prime.

It is a super-2 number, since 2×71379213239² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71379213193 and 71379213202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71379213839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487289 + ... + 616610.

It is an arithmetic number, because the mean of its divisors is an integer number (17845095450).

Almost surely, 2^71379213239 is an apocalyptic number.

71379213239 is a deficient number, since it is larger than the sum of its proper divisors (1168561).

71379213239 is a wasteful number, since it uses less digits than its factorization.

71379213239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168560.

The product of its digits is 428652, while the sum is 47.

The spelling of 71379213239 in words is "seventy-one billion, three hundred seventy-nine million, two hundred thirteen thousand, two hundred thirty-nine".