1660431066202 has 4 divisors (see below), whose sum is σ = 2490646599306. Its totient is φ = 830215533100.

The previous prime is 1660431066149. The next prime is 1660431066257. The reversal of 1660431066202 is 2026601340661.

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., 1011856939921 + 648574126281 = 1005911^2 + 805341^2 .

It is an unprimeable number.

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, 415107766549 + ... + 415107766552.

Almost surely, 2^{1660431066202} is an apocalyptic number.

1660431066202 is a deficient number, since it is larger than the sum of its proper divisors (830215533104).

1660431066202 is an equidigital number, since it uses as much as digits as its factorization.

1660431066202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830215533103.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 1660431066202 in words is "one trillion, six hundred sixty billion, four hundred thirty-one million, sixty-six thousand, two hundred two".