2571663852 has 18 divisors (see below), whose sum is σ = 6500594828. Its totient is φ = 857221272.

The previous prime is 2571663839. The next prime is 2571663863. The reversal of 2571663852 is 2583661752.

2571663852 is a `hidden beast` number, since 2 + 5 + 7 + 1 + 6 + 638 + 5 + 2 = 666.

2571663852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×2571663852² = 13226909935366955808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2571663798 and 2571663807.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35717518 + ... + 35717589.

Almost surely, 2^2571663852 is an apocalyptic number.

It is an amenable number.

2571663852 is an abundant number, since it is smaller than the sum of its proper divisors (3928930976).

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

2571663852 is a wasteful number, since it uses less digits than its factorization.

2571663852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71435117 (or 71435112 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 2571663852 is about 50711.5751283669. The cubic root of 2571663852 is about 1370.0552044106.

The spelling of 2571663852 in words is "two billion, five hundred seventy-one million, six hundred sixty-three thousand, eight hundred fifty-two".