71034272989 has 2 divisors, whose sum is σ = 71034272990. Its totient is φ = 71034272988.

The previous prime is 71034272983. The next prime is 71034273001. The reversal of 71034272989 is 98927243017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68203500964 + 2830772025 = 261158^2 + 53205^2 .

It is a cyclic number.

It is not a de Polignac number, because 71034272989 - 2⁵ = 71034272957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71034272983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35517136494 + 35517136495.

It is an arithmetic number, because the mean of its divisors is an integer number (35517136495).

Almost surely, 2^71034272989 is an apocalyptic number.

It is an amenable number.

71034272989 is a deficient number, since it is larger than the sum of its proper divisors (1).

71034272989 is an equidigital number, since it uses as much as digits as its factorization.

71034272989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 71034272989 in words is "seventy-one billion, thirty-four million, two hundred seventy-two thousand, nine hundred eighty-nine".