71612396331839 has 4 divisors (see below), whose sum is σ = 78122614180200. Its totient is φ = 65102178483480.

The previous prime is 71612396331821. The next prime is 71612396331871. The reversal of 71612396331839 is 93813369321617.

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 71612396331839 - 2¹² = 71612396327743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71612396331809) 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, 3255108924164 + ... + 3255108924185.

It is an arithmetic number, because the mean of its divisors is an integer number (19530653545050).

Almost surely, 2^{71612396331839} is an apocalyptic number.

71612396331839 is a deficient number, since it is larger than the sum of its proper divisors (6510217848361).

71612396331839 is a wasteful number, since it uses less digits than its factorization.

71612396331839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510217848360.

The product of its digits is 26453952, while the sum is 62.

The spelling of 71612396331839 in words is "seventy-one trillion, six hundred twelve billion, three hundred ninety-six million, three hundred thirty-one thousand, eight hundred thirty-nine".