108888861556 has 6 divisors (see below), whose sum is σ = 190555507730. Its totient is φ = 54444430776.

The previous prime is 108888861553. The next prime is 108888861569. The reversal of 108888861556 is 655168888801.

It can be written as a sum of positive squares in only one way, i.e., 97681251600 + 11207609956 = 312540^2 + 105866^2 .

It is a super-2 number, since 2×108888861556² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108888861553) 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 as a sum of consecutive naturals, namely, 13611107691 + ... + 13611107698.

Almost surely, 2^108888861556 is an apocalyptic number.

It is an amenable number.

108888861556 is a deficient number, since it is larger than the sum of its proper divisors (81666646174).

108888861556 is a wasteful number, since it uses less digits than its factorization.

108888861556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27222215393 (or 27222215391 counting only the distinct ones).

The product of its (nonzero) digits is 29491200, while the sum is 64.

The spelling of 108888861556 in words is "one hundred eight billion, eight hundred eighty-eight million, eight hundred sixty-one thousand, five hundred fifty-six".