71057047757 has 8 divisors (see below), whose sum is σ = 74196925440. Its totient is φ = 67921373520.

The previous prime is 71057047753. The next prime is 71057047781. The reversal of 71057047757 is 75774075017.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71057047757 - 2² = 71057047753 is a prime.

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, 1016282 + ... + 1083947.

It is an arithmetic number, because the mean of its divisors is an integer number (9274615680).

Almost surely, 2^71057047757 is an apocalyptic number.

It is an amenable number.

71057047757 is a deficient number, since it is larger than the sum of its proper divisors (3139877683).

71057047757 is a wasteful number, since it uses less digits than its factorization.

71057047757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101723.

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

The spelling of 71057047757 in words is "seventy-one billion, fifty-seven million, forty-seven thousand, seven hundred fifty-seven".