71057047758 has 16 divisors (see below), whose sum is σ = 142116923520. Its totient is φ = 23685211256.

The previous prime is 71057047753. The next prime is 71057047781. The reversal of 71057047758 is 85774075017.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 71057047758.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354373 + ... + 517391.

It is an arithmetic number, because the mean of its divisors is an integer number (8882307720).

Almost surely, 2^71057047758 is an apocalyptic number.

71057047758 is an abundant number, since it is smaller than the sum of its proper divisors (71059875762).

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

71057047758 is a wasteful number, since it uses less digits than its factorization.

71057047758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235671.

The product of its (nonzero) digits is 1920800, while the sum is 51.

The spelling of 71057047758 in words is "seventy-one billion, fifty-seven million, forty-seven thousand, seven hundred fifty-eight".