11908988854 has 16 divisors (see below), whose sum is σ = 20447175168. Its totient is φ = 5095910952.

The previous prime is 11908988821. The next prime is 11908988873. The reversal of 11908988854 is 45888980911.

It is a junction number, because it is equal to n+sod(n) for n = 11908988792 and 11908988801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652462 + ... + 670465.

It is an arithmetic number, because the mean of its divisors is an integer number (1277948448).

Almost surely, 2^11908988854 is an apocalyptic number.

11908988854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11908988854 is a deficient number, since it is larger than the sum of its proper divisors (8538186314).

11908988854 is a wasteful number, since it uses less digits than its factorization.

11908988854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323579.

The product of its (nonzero) digits is 6635520, while the sum is 61.

The spelling of 11908988854 in words is "eleven billion, nine hundred eight million, nine hundred eighty-eight thousand, eight hundred fifty-four".