71057047775 has 12 divisors (see below), whose sum is σ = 100697987952. Its totient is φ = 48724832640.

The previous prime is 71057047753. The next prime is 71057047781. The reversal of 71057047775 is 57774075017.

It is not a de Polignac number, because 71057047775 - 2⁸ = 71057047519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203019962 + ... + 203020311.

It is an arithmetic number, because the mean of its divisors is an integer number (8391498996).

Almost surely, 2^71057047775 is an apocalyptic number.

71057047775 is a deficient number, since it is larger than the sum of its proper divisors (29640940177).

71057047775 is a wasteful number, since it uses less digits than its factorization.

71057047775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406040290 (or 406040285 counting only the distinct ones).

The product of its (nonzero) digits is 1680700, while the sum is 50.

The spelling of 71057047775 in words is "seventy-one billion, fifty-seven million, forty-seven thousand, seven hundred seventy-five".