1666836870350 has 24 divisors (see below), whose sum is σ = 3131012792088. Its totient is φ = 660133412000.

The previous prime is 1666836870343. The next prime is 1666836870367. The reversal of 1666836870350 is 530786386661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1666836870350.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165028304 + ... + 165038403.

It is an arithmetic number, because the mean of its divisors is an integer number (130458866337).

Almost surely, 2^{1666836870350} is an apocalyptic number.

1666836870350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1666836870350 is a deficient number, since it is larger than the sum of its proper divisors (1464175921738).

1666836870350 is a wasteful number, since it uses less digits than its factorization.

1666836870350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330066820 (or 330066815 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 59.

The spelling of 1666836870350 in words is "one trillion, six hundred sixty-six billion, eight hundred thirty-six million, eight hundred seventy thousand, three hundred fifty".