1345153301666 has 4 divisors (see below), whose sum is σ = 2017729952502. Its totient is φ = 672576650832.

The previous prime is 1345153301663. The next prime is 1345153301683. The reversal of 1345153301666 is 6661033515431.

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., 1227617464441 + 117535837225 = 1107979^2 + 342835^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1345153301663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336288325415 + ... + 336288325418.

Almost surely, 2^{1345153301666} is an apocalyptic number.

1345153301666 is a deficient number, since it is larger than the sum of its proper divisors (672576650836).

1345153301666 is an equidigital number, since it uses as much as digits as its factorization.

1345153301666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672576650835.

The product of its (nonzero) digits is 583200, while the sum is 44.

The spelling of 1345153301666 in words is "one trillion, three hundred forty-five billion, one hundred fifty-three million, three hundred one thousand, six hundred sixty-six".