20117631226355 has 32 divisors (see below), whose sum is σ = 26846840771520. Its totient is φ = 14377481233920.

The previous prime is 20117631226327. The next prime is 20117631226393. The reversal of 20117631226355 is 55362213671102.

It is not a de Polignac number, because 20117631226355 - 2¹⁰ = 20117631225331 is a prime.

It is a super-3 number, since 3×20117631226355³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32712416 + ... + 33321725.

It is an arithmetic number, because the mean of its divisors is an integer number (838963774110).

Almost surely, 2^{20117631226355} is an apocalyptic number.

20117631226355 is a deficient number, since it is larger than the sum of its proper divisors (6729209545165).

20117631226355 is a wasteful number, since it uses less digits than its factorization.

20117631226355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66034311.

The product of its (nonzero) digits is 453600, while the sum is 44.

Adding to 20117631226355 its reverse (55362213671102), we get a palindrome (75479844897457).

The spelling of 20117631226355 in words is "twenty trillion, one hundred seventeen billion, six hundred thirty-one million, two hundred twenty-six thousand, three hundred fifty-five".