2666680554164 has 24 divisors (see below), whose sum is σ = 5141340914976. Its totient is φ = 1200126260000.

The previous prime is 2666680554151. The next prime is 2666680554277. The reversal of 2666680554164 is 4614550866662.

It is a happy number.

It is a super-2 number, since 2×2666680554164² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300027122 + ... + 300036009.

It is an arithmetic number, because the mean of its divisors is an integer number (214222538124).

Almost surely, 2^{2666680554164} is an apocalyptic number.

It is an amenable number.

2666680554164 is a deficient number, since it is larger than the sum of its proper divisors (2474660360812).

2666680554164 is a wasteful number, since it uses less digits than its factorization.

2666680554164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600063247 (or 600063245 counting only the distinct ones).

The product of its (nonzero) digits is 49766400, while the sum is 59.

The spelling of 2666680554164 in words is "two trillion, six hundred sixty-six billion, six hundred eighty million, five hundred fifty-four thousand, one hundred sixty-four".