71405002873 has 4 divisors (see below), whose sum is σ = 71414484340. Its totient is φ = 71395521408.

The previous prime is 71405002871. The next prime is 71405002901. The reversal of 71405002873 is 37820050417.

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 40413865024 + 30991137849 = 201032^2 + 176043^2 .

It is a cyclic number.

It is not a de Polignac number, because 71405002873 - 2¹ = 71405002871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71405002871) 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, 4729428 + ... + 4744501.

It is an arithmetic number, because the mean of its divisors is an integer number (17853621085).

Almost surely, 2^71405002873 is an apocalyptic number.

It is an amenable number.

71405002873 is a deficient number, since it is larger than the sum of its proper divisors (9481467).

71405002873 is an equidigital number, since it uses as much as digits as its factorization.

71405002873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9481466.

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 71405002873 in words is "seventy-one billion, four hundred five million, two thousand, eight hundred seventy-three".