82575550557 has 6 divisors (see below), whose sum is σ = 119275795262. Its totient is φ = 55050367032.

The previous prime is 82575550553. The next prime is 82575550573. The reversal of 82575550557 is 75505557528.

82575550557 is a `hidden beast` number, since 82 + 5 + 7 + 5 + 5 + 5 + 0 + 557 = 666.

It can be written as a sum of positive squares in only one way, i.e., 81991168281 + 584382276 = 286341^2 + 24174^2 .

It is not a de Polignac number, because 82575550557 - 2² = 82575550553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82575550553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4587530578 + ... + 4587530595.

Almost surely, 2^82575550557 is an apocalyptic number.

It is an amenable number.

82575550557 is a deficient number, since it is larger than the sum of its proper divisors (36700244705).

82575550557 is a wasteful number, since it uses less digits than its factorization.

82575550557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9175061179 (or 9175061176 counting only the distinct ones).

The product of its (nonzero) digits is 12250000, while the sum is 54.

The spelling of 82575550557 in words is "eighty-two billion, five hundred seventy-five million, five hundred fifty thousand, five hundred fifty-seven".