71804341849 has 2 divisors, whose sum is σ = 71804341850. Its totient is φ = 71804341848.

The previous prime is 71804341811. The next prime is 71804341867. The reversal of 71804341849 is 94814340817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66960877824 + 4843464025 = 258768^2 + 69595^2 .

It is a cyclic number.

It is not a de Polignac number, because 71804341849 - 2²¹ = 71802244697 is a prime.

It is not a weakly prime, because it can be changed into another prime (71804344849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35902170924 + 35902170925.

It is an arithmetic number, because the mean of its divisors is an integer number (35902170925).

Almost surely, 2^71804341849 is an apocalyptic number.

It is an amenable number.

71804341849 is a deficient number, since it is larger than the sum of its proper divisors (1).

71804341849 is an equidigital number, since it uses as much as digits as its factorization.

71804341849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 71804341849 in words is "seventy-one billion, eight hundred four million, three hundred forty-one thousand, eight hundred forty-nine".