71671028041 has 4 divisors (see below), whose sum is σ = 71680554900. Its totient is φ = 71661501184.

The previous prime is 71671028021. The next prime is 71671028053. The reversal of 71671028041 is 14082017617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14082017617 = 101 ⋅139425917.

It can be written as a sum of positive squares in 2 ways, for example, as 45369000000 + 26302028041 = 213000^2 + 162179^2 .

It is a cyclic number.

It is not a de Polignac number, because 71671028041 - 2¹⁵ = 71670995273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71671028021) 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 3 ways as a sum of consecutive naturals, for example, 4752136 + ... + 4767193.

It is an arithmetic number, because the mean of its divisors is an integer number (17920138725).

Almost surely, 2^71671028041 is an apocalyptic number.

It is an amenable number.

71671028041 is a deficient number, since it is larger than the sum of its proper divisors (9526859).

71671028041 is an equidigital number, since it uses as much as digits as its factorization.

71671028041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9526858.

The product of its (nonzero) digits is 18816, while the sum is 37.

The spelling of 71671028041 in words is "seventy-one billion, six hundred seventy-one million, twenty-eight thousand, forty-one".