2666661400430 has 16 divisors (see below), whose sum is σ = 4811960579184. Its totient is φ = 1064004547200.

The previous prime is 2666661400411. The next prime is 2666661400477. The reversal of 2666661400430 is 340041666662.

It is a happy number.

It is a super-2 number, since 2×2666661400430² (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, 332497412 + ... + 332505431.

It is an arithmetic number, because the mean of its divisors is an integer number (300747536199).

Almost surely, 2^{2666661400430} is an apocalyptic number.

2666661400430 is a deficient number, since it is larger than the sum of its proper divisors (2145299178754).

2666661400430 is a wasteful number, since it uses less digits than its factorization.

2666661400430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665003251.

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 2666661400430 in words is "two trillion, six hundred sixty-six billion, six hundred sixty-one million, four hundred thousand, four hundred thirty".