20117553365027 has 4 divisors (see below), whose sum is σ = 20124024115440. Its totient is φ = 20111082614616.

The previous prime is 20117553364999. The next prime is 20117553365047. The reversal of 20117553365027 is 72056335571102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20117553365027 - 2⁶ = 20117553364963 is a prime.

It is a super-2 number, since 2×20117553365027² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20117553365047) 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 3 ways as a sum of consecutive naturals, for example, 3235370543 + ... + 3235376760.

It is an arithmetic number, because the mean of its divisors is an integer number (5031006028860).

Almost surely, 2^{20117553365027} is an apocalyptic number.

20117553365027 is a deficient number, since it is larger than the sum of its proper divisors (6470750413).

20117553365027 is an equidigital number, since it uses as much as digits as its factorization.

20117553365027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6470750412.

The product of its (nonzero) digits is 1323000, while the sum is 47.

The spelling of 20117553365027 in words is "twenty trillion, one hundred seventeen billion, five hundred fifty-three million, three hundred sixty-five thousand, twenty-seven".