71979374113 has 4 divisors (see below), whose sum is σ = 71981904688. Its totient is φ = 71976843540.

The previous prime is 71979374111. The next prime is 71979374123. The reversal of 71979374113 is 31147397917.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71979374113 - 2¹ = 71979374111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71979374111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1222131 + ... + 1279672.

It is an arithmetic number, because the mean of its divisors is an integer number (17995476172).

Almost surely, 2^71979374113 is an apocalyptic number.

It is an amenable number.

71979374113 is a deficient number, since it is larger than the sum of its proper divisors (2530575).

71979374113 is a wasteful number, since it uses less digits than its factorization.

71979374113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530574.

The product of its digits is 1000188, while the sum is 52.

The spelling of 71979374113 in words is "seventy-one billion, nine hundred seventy-nine million, three hundred seventy-four thousand, one hundred thirteen".