666789017234 has 16 divisors (see below), whose sum is σ = 1004996885760. Its totient is φ = 331791801600.

The previous prime is 666789017227. The next prime is 666789017291. The reversal of 666789017234 is 432710987666.

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, 329627 + ... + 1200929.

It is an arithmetic number, because the mean of its divisors is an integer number (62812305360).

Almost surely, 2^666789017234 is an apocalyptic number.

666789017234 is a deficient number, since it is larger than the sum of its proper divisors (338207868526).

666789017234 is a wasteful number, since it uses less digits than its factorization.

666789017234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873145.

The product of its (nonzero) digits is 18289152, while the sum is 59.

The spelling of 666789017234 in words is "six hundred sixty-six billion, seven hundred eighty-nine million, seventeen thousand, two hundred thirty-four".