2557647458871 has 4 divisors (see below), whose sum is σ = 3410196611832. Its totient is φ = 1705098305912.

The previous prime is 2557647458827. The next prime is 2557647458879. The reversal of 2557647458871 is 1788547467552.

2557647458871 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2557647458871 - 2¹⁴ = 2557647442487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2557647458796 and 2557647458805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557647458879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426274576476 + ... + 426274576481.

It is an arithmetic number, because the mean of its divisors is an integer number (852549152958).

Almost surely, 2^{2557647458871} is an apocalyptic number.

2557647458871 is a deficient number, since it is larger than the sum of its proper divisors (852549152961).

2557647458871 is an equidigital number, since it uses as much as digits as its factorization.

2557647458871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852549152960.

The product of its digits is 526848000, while the sum is 69.

The spelling of 2557647458871 in words is "two trillion, five hundred fifty-seven billion, six hundred forty-seven million, four hundred fifty-eight thousand, eight hundred seventy-one".