1666601151151 has 6 divisors (see below), whose sum is σ = 1682322441800. Its totient is φ = 1651025428116.

The previous prime is 1666601151143. The next prime is 1666601151169. The reversal of 1666601151151 is 1511511066661.

It is not a de Polignac number, because 1666601151151 - 2³ = 1666601151143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666601151251) 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 in 5 ways as a sum of consecutive naturals, for example, 72772251 + ... + 72795148.

Almost surely, 2^{1666601151151} is an apocalyptic number.

1666601151151 is a deficient number, since it is larger than the sum of its proper divisors (15721290649).

1666601151151 is an equidigital number, since it uses as much as digits as its factorization.

1666601151151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145567613 (or 145567506 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 40.

The spelling of 1666601151151 in words is "one trillion, six hundred sixty-six billion, six hundred one million, one hundred fifty-one thousand, one hundred fifty-one".