71657303450057 has 16 divisors (see below), whose sum is σ = 77346686968320. Its totient is φ = 65993251960512.

The previous prime is 71657303450021. The next prime is 71657303450063. The reversal of 71657303450057 is 75005430375617.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 71657303450057 - 2¹² = 71657303445961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71657303449990 and 71657303450008.

It is not an unprimeable number, because it can be changed into a prime (71657303450657) 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, 423905648 + ... + 424074654.

It is an arithmetic number, because the mean of its divisors is an integer number (4834167935520).

Almost surely, 2^{71657303450057} is an apocalyptic number.

It is an amenable number.

71657303450057 is a deficient number, since it is larger than the sum of its proper divisors (5689383518263).

71657303450057 is a wasteful number, since it uses less digits than its factorization.

71657303450057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243752.

The product of its (nonzero) digits is 9261000, while the sum is 53.

The spelling of 71657303450057 in words is "seventy-one trillion, six hundred fifty-seven billion, three hundred three million, four hundred fifty thousand, fifty-seven".