108811787779281 has 8 divisors (see below), whose sum is σ = 145082713097344. Its totient is φ = 72541027157040.

The previous prime is 108811787779249. The next prime is 108811787779301. The reversal of 108811787779281 is 182977787118801.

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

It is not a de Polignac number, because 108811787779281 - 2⁵ = 108811787779249 is a prime.

It is a super-2 number, since 2×108811787779281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108811787779241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39624025 + ... + 42281046.

It is an arithmetic number, because the mean of its divisors is an integer number (18135339137168).

Almost surely, 2^{108811787779281} is an apocalyptic number.

It is an amenable number.

108811787779281 is a deficient number, since it is larger than the sum of its proper divisors (36270925318063).

108811787779281 is an equidigital number, since it uses as much as digits as its factorization.

108811787779281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82347911.

The product of its (nonzero) digits is 177020928, while the sum is 75.

The spelling of 108811787779281 in words is "one hundred eight trillion, eight hundred eleven billion, seven hundred eighty-seven million, seven hundred seventy-nine thousand, two hundred eighty-one".