20604201305603 has 16 divisors (see below), whose sum is σ = 20746961071200. Its totient is φ = 20461953853440.

The previous prime is 20604201305573. The next prime is 20604201305627. The reversal of 20604201305603 is 30650310240602.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20604201305603 is a prime.

It is a super-2 number, since 2×20604201305603² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20604201305603.

It is not an unprimeable number, because it can be changed into a prime (20604201305663) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 599482403 + ... + 599516771.

It is an arithmetic number, because the mean of its divisors is an integer number (1296685066950).

Almost surely, 2^{20604201305603} is an apocalyptic number.

20604201305603 is a deficient number, since it is larger than the sum of its proper divisors (142759765597).

20604201305603 is a wasteful number, since it uses less digits than its factorization.

20604201305603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41702.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 20604201305603 in words is "twenty trillion, six hundred four billion, two hundred one million, three hundred five thousand, six hundred three".