1666060616490 has 16 divisors (see below), whose sum is σ = 3998545479648. Its totient is φ = 444282831056.

The previous prime is 1666060616477. The next prime is 1666060616491. The reversal of 1666060616490 is 946160606661.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1666060616491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27767676912 + ... + 27767676971.

It is an arithmetic number, because the mean of its divisors is an integer number (249909092478).

Almost surely, 2^{1666060616490} is an apocalyptic number.

1666060616490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1666060616490 is an abundant number, since it is smaller than the sum of its proper divisors (2332484863158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1666060616490 is a wasteful number, since it uses less digits than its factorization.

1666060616490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55535353893.

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 1666060616490 in words is "one trillion, six hundred sixty-six billion, sixty million, six hundred sixteen thousand, four hundred ninety".