1346666668042 has 4 divisors (see below), whose sum is σ = 2020000002066. Its totient is φ = 673333334020.

The previous prime is 1346666667979. The next prime is 1346666668073. The reversal of 1346666668042 is 2408666666431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1317350722081 + 29315945961 = 1147759^2 + 171219^2 .

It is a super-2 number, since 2×1346666668042² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336666667009 + ... + 336666667012.

Almost surely, 2^{1346666668042} is an apocalyptic number.

1346666668042 is a deficient number, since it is larger than the sum of its proper divisors (673333334024).

1346666668042 is an equidigital number, since it uses as much as digits as its factorization.

1346666668042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673333334023.

The product of its (nonzero) digits is 35831808, while the sum is 58.

The spelling of 1346666668042 in words is "one trillion, three hundred forty-six billion, six hundred sixty-six million, six hundred sixty-eight thousand, forty-two".