1668887018853 has 32 divisors (see below), whose sum is σ = 2346416770560. Its totient is φ = 1052181264960.

The previous prime is 1668887018837. The next prime is 1668887018867. The reversal of 1668887018853 is 3588107888661.

It is not a de Polignac number, because 1668887018853 - 2⁴ = 1668887018837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668887018153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219499950 + ... + 219507552.

It is an arithmetic number, because the mean of its divisors is an integer number (73325524080).

Almost surely, 2^{1668887018853} is an apocalyptic number.

It is an amenable number.

1668887018853 is a deficient number, since it is larger than the sum of its proper divisors (677529751707).

1668887018853 is a wasteful number, since it uses less digits than its factorization.

1668887018853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13889.

The product of its (nonzero) digits is 123863040, while the sum is 69.

The spelling of 1668887018853 in words is "one trillion, six hundred sixty-eight billion, eight hundred eighty-seven million, eighteen thousand, eight hundred fifty-three".