20117034403755 has 16 divisors (see below), whose sum is σ = 32188012826400. Its totient is φ = 10728832421888.

The previous prime is 20117034403751. The next prime is 20117034403841. The reversal of 20117034403755 is 55730443071102.

It is a cyclic number.

It is not a de Polignac number, because 20117034403755 - 2² = 20117034403751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20117034403751) 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 15 ways as a sum of consecutive naturals, for example, 15127830 + ... + 16403819.

It is an arithmetic number, because the mean of its divisors is an integer number (2011750801650).

Almost surely, 2^{20117034403755} is an apocalyptic number.

20117034403755 is a deficient number, since it is larger than the sum of its proper divisors (12070978422645).

20117034403755 is a wasteful number, since it uses less digits than its factorization.

20117034403755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31574190.

The product of its (nonzero) digits is 352800, while the sum is 42.

Adding to 20117034403755 its reverse (55730443071102), we get a palindrome (75847477474857).

The spelling of 20117034403755 in words is "twenty trillion, one hundred seventeen billion, thirty-four million, four hundred three thousand, seven hundred fifty-five".