1666868350502 has 8 divisors (see below), whose sum is σ = 2561285514312. Its totient is φ = 813106512400.

The previous prime is 1666868350451. The next prime is 1666868350541. The reversal of 1666868350502 is 2050538686661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 10163831324 + ... + 10163831487.

It is an arithmetic number, because the mean of its divisors is an integer number (320160689289).

Almost surely, 2^{1666868350502} is an apocalyptic number.

1666868350502 is a deficient number, since it is larger than the sum of its proper divisors (894417163810).

1666868350502 is a wasteful number, since it uses less digits than its factorization.

1666868350502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20327662854.

The product of its (nonzero) digits is 12441600, while the sum is 56.

The spelling of 1666868350502 in words is "one trillion, six hundred sixty-six billion, eight hundred sixty-eight million, three hundred fifty thousand, five hundred two".