20603121067 has 8 divisors (see below), whose sum is σ = 21767528960. Its totient is φ = 19446716520.

The previous prime is 20603121059. The next prime is 20603121073. The reversal of 20603121067 is 76012130602.

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 20603121067 - 2³ = 20603121059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20603121037) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1995543 + ... + 2005840.

It is an arithmetic number, because the mean of its divisors is an integer number (2720941120).

Almost surely, 2^20603121067 is an apocalyptic number.

20603121067 is a deficient number, since it is larger than the sum of its proper divisors (1164407893).

20603121067 is a wasteful number, since it uses less digits than its factorization.

20603121067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001673.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 20603121067 its reverse (76012130602), we get a palindrome (96615251669).

The spelling of 20603121067 in words is "twenty billion, six hundred three million, one hundred twenty-one thousand, sixty-seven".