71644114273 has 4 divisors (see below), whose sum is σ = 72995890068. Its totient is φ = 70292338480.

The previous prime is 71644114231. The next prime is 71644114319. The reversal of 71644114273 is 37241144617.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34930488609 + 36713625664 = 186897^2 + 191608^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71644114273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71644514273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675887818 + ... + 675887923.

It is an arithmetic number, because the mean of its divisors is an integer number (18248972517).

Almost surely, 2^71644114273 is an apocalyptic number.

It is an amenable number.

71644114273 is a deficient number, since it is larger than the sum of its proper divisors (1351775795).

71644114273 is a wasteful number, since it uses less digits than its factorization.

71644114273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351775794.

The product of its digits is 112896, while the sum is 40.

The spelling of 71644114273 in words is "seventy-one billion, six hundred forty-four million, one hundred fourteen thousand, two hundred seventy-three".