1666902014856 has 96 divisors (see below), whose sum is σ = 4862963589120. Its totient is φ = 512769916800.

The previous prime is 1666902014803. The next prime is 1666902014863. The reversal of 1666902014856 is 6584102096661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3730041 + ... + 4152951.

It is an arithmetic number, because the mean of its divisors is an integer number (50655870720).

Almost surely, 2^{1666902014856} is an apocalyptic number.

It is an amenable number.

1666902014856 is an abundant number, since it is smaller than the sum of its proper divisors (3196061574264).

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

1666902014856 is a wasteful number, since it uses less digits than its factorization.

1666902014856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427147 (or 427140 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 1666902014856 in words is "one trillion, six hundred sixty-six billion, nine hundred two million, fourteen thousand, eight hundred fifty-six".