20989348103 has 4 divisors (see below), whose sum is σ = 20992560600. Its totient is φ = 20986135608.

The previous prime is 20989348097. The next prime is 20989348147. The reversal of 20989348103 is 30184398902.

It is a happy number.

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 20989348103 - 2³⁰ = 19915606279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20989348703) 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, 1596428 + ... + 1609521.

It is an arithmetic number, because the mean of its divisors is an integer number (5248140150).

Almost surely, 2^20989348103 is an apocalyptic number.

20989348103 is a deficient number, since it is larger than the sum of its proper divisors (3212497).

20989348103 is an equidigital number, since it uses as much as digits as its factorization.

20989348103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212496.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 20989348103 in words is "twenty billion, nine hundred eighty-nine million, three hundred forty-eight thousand, one hundred three".