71704564219 has 4 divisors (see below), whose sum is σ = 71850602520. Its totient is φ = 71558525920.

The previous prime is 71704564193. The next prime is 71704564237. The reversal of 71704564219 is 91246540717.

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 71704564219 - 2¹⁷ = 71704433147 is a prime.

It is a super-2 number, since 2×71704564219² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71704564619) 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, 73018414 + ... + 73019395.

It is an arithmetic number, because the mean of its divisors is an integer number (17962650630).

Almost surely, 2^71704564219 is an apocalyptic number.

71704564219 is a deficient number, since it is larger than the sum of its proper divisors (146038301).

71704564219 is a wasteful number, since it uses less digits than its factorization.

71704564219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146038300.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 71704564219 in words is "seventy-one billion, seven hundred four million, five hundred sixty-four thousand, two hundred nineteen".