2546145666 has 24 divisors (see below), whose sum is σ = 5524659504. Its totient is φ = 847482840.

The previous prime is 2546145659. The next prime is 2546145671. The reversal of 2546145666 is 6665416452.

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, 89916 + ... + 114791.

It is an arithmetic number, because the mean of its divisors is an integer number (230194146).

Almost surely, 2^2546145666 is an apocalyptic number.

2546145666 is an abundant number, since it is smaller than the sum of its proper divisors (2978513838).

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

2546145666 is a wasteful number, since it uses less digits than its factorization.

2546145666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205406 (or 205403 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The square root of 2546145666 is about 50459.3466664007. The cubic root of 2546145666 is about 1365.5085236470.

The spelling of 2546145666 in words is "two billion, five hundred forty-six million, one hundred forty-five thousand, six hundred sixty-six".