71979374111 has 2 divisors, whose sum is σ = 71979374112. Its totient is φ = 71979374110.

The previous prime is 71979374099. The next prime is 71979374123. The reversal of 71979374111 is 11147397917.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (71979374099) and next prime (71979374123).

It is a cyclic number.

It is not a de Polignac number, because 71979374111 - 2²² = 71975179807 is a prime.

It is a super-2 number, since 2×71979374111² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71979374111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71979374191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35989687055 + 35989687056.

It is an arithmetic number, because the mean of its divisors is an integer number (35989687056).

Almost surely, 2^71979374111 is an apocalyptic number.

71979374111 is a deficient number, since it is larger than the sum of its proper divisors (1).

71979374111 is an equidigital number, since it uses as much as digits as its factorization.

71979374111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 50.

The spelling of 71979374111 in words is "seventy-one billion, nine hundred seventy-nine million, three hundred seventy-four thousand, one hundred eleven".