71471448641 has 2 divisors, whose sum is σ = 71471448642. Its totient is φ = 71471448640.

The previous prime is 71471448623. The next prime is 71471448679. The reversal of 71471448641 is 14684417417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70153468225 + 1317980416 = 264865^2 + 36304^2 .

It is a cyclic number.

It is not a de Polignac number, because 71471448641 - 2¹⁴ = 71471432257 is a prime.

It is a super-3 number, since 3×71471448641³ (a number of 34 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (71471441641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35735724320 + 35735724321.

It is an arithmetic number, because the mean of its divisors is an integer number (35735724321).

Almost surely, 2^71471448641 is an apocalyptic number.

It is an amenable number.

71471448641 is a deficient number, since it is larger than the sum of its proper divisors (1).

71471448641 is an equidigital number, since it uses as much as digits as its factorization.

71471448641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 602112, while the sum is 47.

The spelling of 71471448641 in words is "seventy-one billion, four hundred seventy-one million, four hundred forty-eight thousand, six hundred forty-one".