2557446918066 has 24 divisors (see below), whose sum is σ = 5541174157584. Its totient is φ = 852476280120.

The previous prime is 2557446918029. The next prime is 2557446918101. The reversal of 2557446918066 is 6608196447552.

2557446918066 is a `hidden beast` number, since 2 + 5 + 5 + 7 + 446 + 9 + 180 + 6 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2557446917994 and 2557446918012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2649705 + ... + 3483651.

It is an arithmetic number, because the mean of its divisors is an integer number (230882256566).

Almost surely, 2^{2557446918066} is an apocalyptic number.

2557446918066 is an abundant number, since it is smaller than the sum of its proper divisors (2983727239518).

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

2557446918066 is a wasteful number, since it uses less digits than its factorization.

2557446918066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004326 (or 1004323 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 63.

The spelling of 2557446918066 in words is "two trillion, five hundred fifty-seven billion, four hundred forty-six million, nine hundred eighteen thousand, sixty-six".