71032747420 has 48 divisors (see below), whose sum is σ = 151449338880. Its totient is φ = 27979009344.

The previous prime is 71032747399. The next prime is 71032747433. The reversal of 71032747420 is 2474723017.

It is a self number, because there is not a number n which added to its sum of digits gives 71032747420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4557601 + ... + 4573159.

It is an arithmetic number, because the mean of its divisors is an integer number (3155194560).

Almost surely, 2^71032747420 is an apocalyptic number.

It is an amenable number.

71032747420 is an abundant number, since it is smaller than the sum of its proper divisors (80416591460).

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

71032747420 is a wasteful number, since it uses less digits than its factorization.

71032747420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19042 (or 19040 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 37.

The spelling of 71032747420 in words is "seventy-one billion, thirty-two million, seven hundred forty-seven thousand, four hundred twenty".