71720002118 has 16 divisors (see below), whose sum is σ = 116557269840. Its totient is φ = 32965691136.

The previous prime is 71720002093. The next prime is 71720002121. The reversal of 71720002118 is 81120002717.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24526583 + ... + 24529506.

It is an arithmetic number, because the mean of its divisors is an integer number (7284829365).

Almost surely, 2^71720002118 is an apocalyptic number.

71720002118 is a deficient number, since it is larger than the sum of its proper divisors (44837267722).

71720002118 is a wasteful number, since it uses less digits than its factorization.

71720002118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49056151.

The product of its (nonzero) digits is 1568, while the sum is 29.

The spelling of 71720002118 in words is "seventy-one billion, seven hundred twenty million, two thousand, one hundred eighteen".