71028759012 has 12 divisors (see below), whose sum is σ = 165733771056. Its totient is φ = 23676253000.

The previous prime is 71028759007. The next prime is 71028759017. The reversal of 71028759012 is 21095782017.

It is an interprime number because it is at equal distance from previous prime (71028759007) and next prime (71028759017).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×71028759012² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71028759017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2959531614 + ... + 2959531637.

It is an arithmetic number, because the mean of its divisors is an integer number (13811147588).

Almost surely, 2^71028759012 is an apocalyptic number.

It is an amenable number.

71028759012 is an abundant number, since it is smaller than the sum of its proper divisors (94705012044).

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

71028759012 is a wasteful number, since it uses less digits than its factorization.

71028759012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5919063258 (or 5919063256 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 42.

The spelling of 71028759012 in words is "seventy-one billion, twenty-eight million, seven hundred fifty-nine thousand, twelve".