71065612072 has 64 divisors (see below), whose sum is σ = 165688427520. Its totient is φ = 27824007168.

The previous prime is 71065612067. The next prime is 71065612073. The reversal of 71065612072 is 27021656017.

It is not an unprimeable number, because it can be changed into a prime (71065612073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432568 + ... + 573799.

It is an arithmetic number, because the mean of its divisors is an integer number (2588881680).

Almost surely, 2^71065612072 is an apocalyptic number.

It is an amenable number.

71065612072 is an abundant number, since it is smaller than the sum of its proper divisors (94622815448).

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

71065612072 is a wasteful number, since it uses less digits than its factorization.

71065612072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006490 (or 1006486 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 71065612072 in words is "seventy-one billion, sixty-five million, six hundred twelve thousand, seventy-two".