2428623857666 has 8 divisors (see below), whose sum is σ = 3760449844224. Its totient is φ = 1175140576260.

The previous prime is 2428623857659. The next prime is 2428623857713. The reversal of 2428623857666 is 6667583268242.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19585676210 + ... + 19585676333.

It is an arithmetic number, because the mean of its divisors is an integer number (470056230528).

Almost surely, 2^{2428623857666} is an apocalyptic number.

2428623857666 is a deficient number, since it is larger than the sum of its proper divisors (1331825986558).

2428623857666 is a wasteful number, since it uses less digits than its factorization.

2428623857666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39171352576.

The product of its digits is 278691840, while the sum is 65.

The spelling of 2428623857666 in words is "two trillion, four hundred twenty-eight billion, six hundred twenty-three million, eight hundred fifty-seven thousand, six hundred sixty-six".