1218001637103 has 16 divisors (see below), whose sum is σ = 1658763840000. Its totient is φ = 794624605056.

The previous prime is 1218001637101. The next prime is 1218001637113. The reversal of 1218001637103 is 3017361008121.

It is not a de Polignac number, because 1218001637103 - 2¹ = 1218001637101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218001637101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591648 + ... + 1669146.

It is an arithmetic number, because the mean of its divisors is an integer number (103672740000).

Almost surely, 2^{1218001637103} is an apocalyptic number.

1218001637103 is a deficient number, since it is larger than the sum of its proper divisors (440762202897).

1218001637103 is a wasteful number, since it uses less digits than its factorization.

1218001637103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085566.

The product of its (nonzero) digits is 6048, while the sum is 33.

The spelling of 1218001637103 in words is "one trillion, two hundred eighteen billion, one million, six hundred thirty-seven thousand, one hundred three".