71161809892090 has 16 divisors (see below), whose sum is σ = 128249200185120. Its totient is φ = 28429625650320.

The previous prime is 71161809892081. The next prime is 71161809892223. The reversal of 71161809892090 is 9029890816117.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4387279800 + ... + 4387296019.

It is an arithmetic number, because the mean of its divisors is an integer number (8015575011570).

Almost surely, 2^{71161809892090} is an apocalyptic number.

71161809892090 is a deficient number, since it is larger than the sum of its proper divisors (57087390293030).

71161809892090 is a wasteful number, since it uses less digits than its factorization.

71161809892090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8774576637.

The product of its (nonzero) digits is 3919104, while the sum is 61.

The spelling of 71161809892090 in words is "seventy-one trillion, one hundred sixty-one billion, eight hundred nine million, eight hundred ninety-two thousand, ninety".