666234365123642 has 32 divisors (see below), whose sum is σ = 1163669526681984. Its totient is φ = 280140683659200.

The previous prime is 666234365123633. The next prime is 666234365123659. The reversal of 666234365123642 is 246321563432666.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231573917 + ... + 234433247.

It is an arithmetic number, because the mean of its divisors is an integer number (36364672708812).

Almost surely, 2^{666234365123642} is an apocalyptic number.

666234365123642 is a deficient number, since it is larger than the sum of its proper divisors (497435161558342).

666234365123642 is a wasteful number, since it uses less digits than its factorization.

666234365123642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173414.

The product of its digits is 134369280, while the sum is 59.

The spelling of 666234365123642 in words is "six hundred sixty-six trillion, two hundred thirty-four billion, three hundred sixty-five million, one hundred twenty-three thousand, six hundred forty-two".