71004407011 has 4 divisors (see below), whose sum is σ = 71474635024. Its totient is φ = 70534179000.

The previous prime is 71004407009. The next prime is 71004407063. The reversal of 71004407011 is 11070440017.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71004407011 - 2¹ = 71004407009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71004407081) 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, 235113780 + ... + 235114081.

It is an arithmetic number, because the mean of its divisors is an integer number (17868658756).

Almost surely, 2^71004407011 is an apocalyptic number.

71004407011 is a deficient number, since it is larger than the sum of its proper divisors (470228013).

71004407011 is a wasteful number, since it uses less digits than its factorization.

71004407011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470228012.

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 71004407011 its reverse (11070440017), we get a palindrome (82074847028).

The spelling of 71004407011 in words is "seventy-one billion, four million, four hundred seven thousand, eleven".