71051117279 has 16 divisors (see below), whose sum is σ = 78417092448. Its totient is φ = 64093151232.

The previous prime is 71051117227. The next prime is 71051117287. The reversal of 71051117279 is 97271115017.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71051117279 is a prime.

It is a super-2 number, since 2×71051117279² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71051117779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800834 + ... + 885119.

It is an arithmetic number, because the mean of its divisors is an integer number (4901068278).

Almost surely, 2^71051117279 is an apocalyptic number.

71051117279 is a deficient number, since it is larger than the sum of its proper divisors (7365975169).

71051117279 is a wasteful number, since it uses less digits than its factorization.

71051117279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686074.

The product of its (nonzero) digits is 30870, while the sum is 41.

The spelling of 71051117279 in words is "seventy-one billion, fifty-one million, one hundred seventeen thousand, two hundred seventy-nine".