71009841883249 has 4 divisors (see below), whose sum is σ = 71010411905700. Its totient is φ = 71009271860800.

The previous prime is 71009841883241. The next prime is 71009841883289. The reversal of 71009841883249 is 94238814890017.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46485873983025 + 24523967900224 = 6818055^2 + 4952168^2 .

It is a cyclic number.

It is not a de Polignac number, because 71009841883249 - 2³ = 71009841883241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71009841883241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284824324 + ... + 285073525.

It is an arithmetic number, because the mean of its divisors is an integer number (17752602976425).

Almost surely, 2^{71009841883249} is an apocalyptic number.

It is an amenable number.

71009841883249 is a deficient number, since it is larger than the sum of its proper divisors (570022451).

71009841883249 is a wasteful number, since it uses less digits than its factorization.

71009841883249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570022450.

The product of its (nonzero) digits is 27869184, while the sum is 64.

The spelling of 71009841883249 in words is "seventy-one trillion, nine billion, eight hundred forty-one million, eight hundred eighty-three thousand, two hundred forty-nine".