20735340055 has 8 divisors (see below), whose sum is σ = 24986520000. Its totient is φ = 16518864096.

The previous prime is 20735340013. The next prime is 20735340139. The reversal of 20735340055 is 55004353702.

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

It is a cyclic number.

It is not a de Polignac number, because 20735340055 - 2¹⁵ = 20735307287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20735340055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8674680 + ... + 8677069.

It is an arithmetic number, because the mean of its divisors is an integer number (3123315000).

Almost surely, 2^20735340055 is an apocalyptic number.

20735340055 is a deficient number, since it is larger than the sum of its proper divisors (4251179945).

20735340055 is a wasteful number, since it uses less digits than its factorization.

20735340055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17351993.

The product of its (nonzero) digits is 63000, while the sum is 34.

Adding to 20735340055 its reverse (55004353702), we get a palindrome (75739693757).

The spelling of 20735340055 in words is "twenty billion, seven hundred thirty-five million, three hundred forty thousand, fifty-five".