1218837661088 has 24 divisors (see below), whose sum is σ = 2400845069952. Its totient is φ = 609099230656.

The previous prime is 1218837661087. The next prime is 1218837661177. The reversal of 1218837661088 is 8801667388121.

It is not an unprimeable number, because it can be changed into a prime (1218837661081) 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 3 ways as a sum of consecutive naturals, for example, 9925520 + ... + 10047567.

It is an arithmetic number, because the mean of its divisors is an integer number (100035211248).

Almost surely, 2^{1218837661088} is an apocalyptic number.

It is an amenable number.

1218837661088 is a deficient number, since it is larger than the sum of its proper divisors (1182007408864).

1218837661088 is a wasteful number, since it uses less digits than its factorization.

1218837661088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19975004 (or 19974996 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 59.

The spelling of 1218837661088 in words is "one trillion, two hundred eighteen billion, eight hundred thirty-seven million, six hundred sixty-one thousand, eighty-eight".