1518738621121 has 8 divisors (see below), whose sum is σ = 1535877655200. Its totient is φ = 1501601244000.

The previous prime is 1518738621119. The next prime is 1518738621163. The reversal of 1518738621121 is 1211268378151.

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

It is a cyclic number.

It is not a de Polignac number, because 1518738621121 - 2¹ = 1518738621119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1518738421121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1477746 + ... + 2284996.

It is an arithmetic number, because the mean of its divisors is an integer number (191984706900).

Almost surely, 2^{1518738621121} is an apocalyptic number.

It is an amenable number.

1518738621121 is a deficient number, since it is larger than the sum of its proper divisors (17139034079).

1518738621121 is an equidigital number, since it uses as much as digits as its factorization.

1518738621121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828479.

The product of its digits is 161280, while the sum is 46.

The spelling of 1518738621121 in words is "one trillion, five hundred eighteen billion, seven hundred thirty-eight million, six hundred twenty-one thousand, one hundred twenty-one".