109143653529857 has 8 divisors (see below), whose sum is σ = 115564268877192. Its totient is φ = 102723082675200.

The previous prime is 109143653529851. The next prime is 109143653529887. The reversal of 109143653529857 is 758925356341901.

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

It can be written as a sum of positive squares in 4 ways, for example, as 84973441354816 + 24170212175041 = 9218104^2 + 4916321^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109143653529857 is a prime.

It is a Duffinian 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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6005444 + ... + 15948437.

It is an arithmetic number, because the mean of its divisors is an integer number (14445533609649).

It is a 1-persistent number, because it is pandigital, but 2⋅109143653529857 = 218287307059714 is not.

Almost surely, 2^{109143653529857} is an apocalyptic number.

109143653529857 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

109143653529857 is a deficient number, since it is larger than the sum of its proper divisors (6420615347335).

109143653529857 is a wasteful number, since it uses less digits than its factorization.

109143653529857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22246339.

The product of its (nonzero) digits is 244944000, while the sum is 68.

The spelling of 109143653529857 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-seven".