71057047756 has 12 divisors (see below), whose sum is σ = 124494938568. Its totient is φ = 35487065312.

The previous prime is 71057047753. The next prime is 71057047781. The reversal of 71057047756 is 65774075017.

It is not an unprimeable number, because it can be changed into a prime (71057047753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10360786 + ... + 10367641.

It is an arithmetic number, because the mean of its divisors is an integer number (10374578214).

Almost surely, 2^71057047756 is an apocalyptic number.

It is an amenable number.

71057047756 is a deficient number, since it is larger than the sum of its proper divisors (53437890812).

71057047756 is a wasteful number, since it uses less digits than its factorization.

71057047756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20729288 (or 20729286 counting only the distinct ones).

The product of its (nonzero) digits is 1440600, while the sum is 49.

The spelling of 71057047756 in words is "seventy-one billion, fifty-seven million, forty-seven thousand, seven hundred fifty-six".