71213173111979 has 8 divisors (see below), whose sum is σ = 71415054088560. Its totient is φ = 71011412992000.

The previous prime is 71213173111961. The next prime is 71213173111981. The reversal of 71213173111979 is 97911137131217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71213173111979 - 2⁴⁰ = 70113661484203 is a prime.

It is a super-2 number, since 2×71213173111979² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71213173111979.

It is not an unprimeable number, because it can be changed into a prime (71213173111909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29033942 + ... + 31391019.

It is an arithmetic number, because the mean of its divisors is an integer number (8926881761070).

Almost surely, 2^{71213173111979} is an apocalyptic number.

71213173111979 is a deficient number, since it is larger than the sum of its proper divisors (201880976581).

71213173111979 is a wasteful number, since it uses less digits than its factorization.

71213173111979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60428301.

The product of its digits is 500094, while the sum is 53.

The spelling of 71213173111979 in words is "seventy-one trillion, two hundred thirteen billion, one hundred seventy-three million, one hundred eleven thousand, nine hundred seventy-nine".