71671001111 has 8 divisors (see below), whose sum is σ = 72311207760. Its totient is φ = 71030899072.

The previous prime is 71671001047. The next prime is 71671001117. The reversal of 71671001111 is 11110017617.

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 71671001111 - 2⁶ = 71671001047 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 (71671001117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2159801 + ... + 2192733.

It is an arithmetic number, because the mean of its divisors is an integer number (9038900970).

Almost surely, 2^71671001111 is an apocalyptic number.

71671001111 is a deficient number, since it is larger than the sum of its proper divisors (640206649).

71671001111 is a wasteful number, since it uses less digits than its factorization.

71671001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52305.

The product of its (nonzero) digits is 294, while the sum is 26.

Adding to 71671001111 its reverse (11110017617), we get a palindrome (82781018728).

The spelling of 71671001111 in words is "seventy-one billion, six hundred seventy-one million, one thousand, one hundred eleven".