71013444009 has 4 divisors (see below), whose sum is σ = 94684592016. Its totient is φ = 47342296004.

The previous prime is 71013443999. The next prime is 71013444023. The reversal of 71013444009 is 90044431017.

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 71013444009 - 2¹³ = 71013435817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71013444109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11835573999 + ... + 11835574004.

It is an arithmetic number, because the mean of its divisors is an integer number (23671148004).

Almost surely, 2^71013444009 is an apocalyptic number.

It is an amenable number.

71013444009 is a deficient number, since it is larger than the sum of its proper divisors (23671148007).

71013444009 is a wasteful number, since it uses less digits than its factorization.

71013444009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23671148006.

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 71013444009 in words is "seventy-one billion, thirteen million, four hundred forty-four thousand, nine".