1666201353352 has 16 divisors (see below), whose sum is σ = 3183073340940. Its totient is φ = 817381795776.

The previous prime is 1666201353331. The next prime is 1666201353373. The reversal of 1666201353352 is 2533531026661.

It is an interprime number because it is at equal distance from previous prime (1666201353331) and next prime (1666201353373).

It can be written as a sum of positive squares in 2 ways, for example, as 1629569690116 + 36631663236 = 1276546^2 + 191394^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1666201353299 and 1666201353308.

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, 1964859663 + ... + 1964860510.

Almost surely, 2^{1666201353352} is an apocalyptic number.

It is an amenable number.

1666201353352 is a deficient number, since it is larger than the sum of its proper divisors (1516871987588).

1666201353352 is a wasteful number, since it uses less digits than its factorization.

1666201353352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3929720232 (or 3929720228 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 43.

The spelling of 1666201353352 in words is "one trillion, six hundred sixty-six billion, two hundred one million, three hundred fifty-three thousand, three hundred fifty-two".