1345164155666 has 8 divisors (see below), whose sum is σ = 2045386593084. Its totient is φ = 663368624640.

The previous prime is 1345164155653. The next prime is 1345164155693. The reversal of 1345164155666 is 6665514615431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1247119395025 + 98044760641 = 1116745^2 + 313121^2 .

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, 4606726415 + ... + 4606726706.

Almost surely, 2^{1345164155666} is an apocalyptic number.

1345164155666 is a deficient number, since it is larger than the sum of its proper divisors (700222437418).

1345164155666 is an equidigital number, since it uses as much as digits as its factorization.

1345164155666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9213453196.

The product of its digits is 7776000, while the sum is 53.

The spelling of 1345164155666 in words is "one trillion, three hundred forty-five billion, one hundred sixty-four million, one hundred fifty-five thousand, six hundred sixty-six".