71681802210 has 48 divisors (see below), whose sum is σ = 186972027840. Its totient is φ = 19053676320.

The previous prime is 71681802209. The next prime is 71681802271. The reversal of 71681802210 is 1220818617.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1252500 + ... + 1308479.

It is an arithmetic number, because the mean of its divisors is an integer number (3895250580).

Almost surely, 2^71681802210 is an apocalyptic number.

71681802210 is an abundant number, since it is smaller than the sum of its proper divisors (115290225630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71681802210 is a wasteful number, since it uses less digits than its factorization.

71681802210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561303 (or 2561300 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The spelling of 71681802210 in words is "seventy-one billion, six hundred eighty-one million, eight hundred two thousand, two hundred ten".