71003536720 has 40 divisors (see below), whose sum is σ = 168922375776. Its totient is φ = 27740915328.

The previous prime is 71003536717. The next prime is 71003536733. The reversal of 71003536720 is 2763530017.

It is a tau number, because it is divible by the number of its divisors (40).

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, 10316842 + ... + 10323721.

Almost surely, 2^71003536720 is an apocalyptic number.

It is an amenable number.

71003536720 is an abundant number, since it is smaller than the sum of its proper divisors (97918839056).

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

71003536720 is a wasteful number, since it uses less digits than its factorization.

71003536720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20640619 (or 20640613 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 34.

The spelling of 71003536720 in words is "seventy-one billion, three million, five hundred thirty-six thousand, seven hundred twenty".