2546216213666 has 16 divisors (see below), whose sum is σ = 3832944599904. Its totient is φ = 1268571024864.

The previous prime is 2546216213663. The next prime is 2546216213677. The reversal of 2546216213666 is 6663126126452.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2546216213663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 943301 + ... + 2445863.

It is an arithmetic number, because the mean of its divisors is an integer number (239559037494).

Almost surely, 2^{2546216213666} is an apocalyptic number.

2546216213666 is a deficient number, since it is larger than the sum of its proper divisors (1286728386238).

2546216213666 is a wasteful number, since it uses less digits than its factorization.

2546216213666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505585.

The product of its digits is 3732480, while the sum is 50.

The spelling of 2546216213666 in words is "two trillion, five hundred forty-six billion, two hundred sixteen million, two hundred thirteen thousand, six hundred sixty-six".