20654054615603 has 4 divisors (see below), whose sum is σ = 20866983013800. Its totient is φ = 20441126217408.

The previous prime is 20654054615591. The next prime is 20654054615617. The reversal of 20654054615603 is 30651645045602.

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 20654054615603 - 2⁴ = 20654054615587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20654054615003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106464198953 + ... + 106464199146.

It is an arithmetic number, because the mean of its divisors is an integer number (5216745753450).

Almost surely, 2^{20654054615603} is an apocalyptic number.

20654054615603 is a deficient number, since it is larger than the sum of its proper divisors (212928398197).

20654054615603 is an equidigital number, since it uses as much as digits as its factorization.

20654054615603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212928398196.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 20654054615603 in words is "twenty trillion, six hundred fifty-four billion, fifty-four million, six hundred fifteen thousand, six hundred three".