71200672489 has 2 divisors, whose sum is σ = 71200672490. Its totient is φ = 71200672488.

The previous prime is 71200672471. The next prime is 71200672541. The reversal of 71200672489 is 98427600217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65391184089 + 5809488400 = 255717^2 + 76220^2 .

It is a cyclic number.

It is not a de Polignac number, because 71200672489 - 2¹¹ = 71200670441 is a prime.

It is not a weakly prime, because it can be changed into another prime (71200672889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35600336244 + 35600336245.

It is an arithmetic number, because the mean of its divisors is an integer number (35600336245).

Almost surely, 2^71200672489 is an apocalyptic number.

It is an amenable number.

71200672489 is a deficient number, since it is larger than the sum of its proper divisors (1).

71200672489 is an equidigital number, since it uses as much as digits as its factorization.

71200672489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 71200672489 in words is "seventy-one billion, two hundred million, six hundred seventy-two thousand, four hundred eighty-nine".