109143653529855 has 64 divisors (see below), whose sum is σ = 199922550847488. Its totient is φ = 49807856793600.

The previous prime is 109143653529851. The next prime is 109143653529887. The reversal of 109143653529855 is 558925356341901.

It is a Cunningham number, because it is equal to 10447184²-1.

It is not a de Polignac number, because 109143653529855 - 2² = 109143653529851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109143653529851) 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 63 ways as a sum of consecutive naturals, for example, 1096904467 + ... + 1097003963.

It is an arithmetic number, because the mean of its divisors is an integer number (3123789856992).

Almost surely, 2^{109143653529855} is an apocalyptic number.

109143653529855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

109143653529855 is a deficient number, since it is larger than the sum of its proper divisors (90778897317633).

109143653529855 is a wasteful number, since it uses less digits than its factorization.

109143653529855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117496.

The product of its (nonzero) digits is 174960000, while the sum is 66.

The spelling of 109143653529855 in words is "one hundred nine trillion, one hundred forty-three billion, six hundred fifty-three million, five hundred twenty-nine thousand, eight hundred fifty-five".