71204871806 has 16 divisors (see below), whose sum is σ = 109040284080. Its totient is φ = 34862807040.

The previous prime is 71204871799. The next prime is 71204871809. The reversal of 71204871806 is 60817840217.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71204871809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1143665 + ... + 1204316.

It is an arithmetic number, because the mean of its divisors is an integer number (6815017755).

Almost surely, 2^71204871806 is an apocalyptic number.

71204871806 is a deficient number, since it is larger than the sum of its proper divisors (37835412274).

71204871806 is a wasteful number, since it uses less digits than its factorization.

71204871806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348299.

The product of its (nonzero) digits is 150528, while the sum is 44.

The spelling of 71204871806 in words is "seventy-one billion, two hundred four million, eight hundred seventy-one thousand, eight hundred six".