71423540205 has 32 divisors (see below), whose sum is σ = 121986570240. Its totient is φ = 35579396160.

The previous prime is 71423540203. The next prime is 71423540207. The reversal of 71423540205 is 50204532417.

It is an interprime number because it is at equal distance from previous prime (71423540203) and next prime (71423540207).

It is not a de Polignac number, because 71423540205 - 2¹ = 71423540203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71423540203) 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 31 ways as a sum of consecutive naturals, for example, 1744617 + ... + 1785086.

It is an arithmetic number, because the mean of its divisors is an integer number (3812080320).

Almost surely, 2^71423540205 is an apocalyptic number.

It is an amenable number.

71423540205 is a deficient number, since it is larger than the sum of its proper divisors (50563030035).

71423540205 is a wasteful number, since it uses less digits than its factorization.

71423540205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3529801.

The product of its (nonzero) digits is 33600, while the sum is 33.

The spelling of 71423540205 in words is "seventy-one billion, four hundred twenty-three million, five hundred forty thousand, two hundred five".