1087218808556 has 12 divisors (see below), whose sum is σ = 1949038596120. Its totient is φ = 530350638240.

The previous prime is 1087218808553. The next prime is 1087218808567. The reversal of 1087218808556 is 6558088127801.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1087218808495 and 1087218808504.

It is not an unprimeable number, because it can be changed into a prime (1087218808553) 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 3 ways as a sum of consecutive naturals, for example, 3314691326 + ... + 3314691653.

It is an arithmetic number, because the mean of its divisors is an integer number (162419883010).

Almost surely, 2^{1087218808556} is an apocalyptic number.

It is an amenable number.

1087218808556 is a deficient number, since it is larger than the sum of its proper divisors (861819787564).

1087218808556 is a wasteful number, since it uses less digits than its factorization.

1087218808556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6629383024 (or 6629383022 counting only the distinct ones).

The product of its (nonzero) digits is 8601600, while the sum is 59.

The spelling of 1087218808556 in words is "one trillion, eighty-seven billion, two hundred eighteen million, eight hundred eight thousand, five hundred fifty-six".