1218842820700 has 36 divisors (see below), whose sum is σ = 2671075962072. Its totient is φ = 482710024000.

The previous prime is 1218842820677. The next prime is 1218842820719. The reversal of 1218842820700 is 70282488121.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 60328654 + ... + 60348853.

It is an arithmetic number, because the mean of its divisors is an integer number (74196554502).

Almost surely, 2^{1218842820700} is an apocalyptic number.

1218842820700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1218842820700 is an abundant number, since it is smaller than the sum of its proper divisors (1452233141372).

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

1218842820700 is a wasteful number, since it uses less digits than its factorization.

1218842820700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120677622 (or 120677615 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 43.

The spelling of 1218842820700 in words is "one trillion, two hundred eighteen billion, eight hundred forty-two million, eight hundred twenty thousand, seven hundred".