20434020603 has 4 divisors (see below), whose sum is σ = 27245360808. Its totient is φ = 13622680400.

The previous prime is 20434020569. The next prime is 20434020623. The reversal of 20434020603 is 30602043402.

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 20434020603 - 2⁶ = 20434020539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20434020623) 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, 3405670098 + ... + 3405670103.

It is an arithmetic number, because the mean of its divisors is an integer number (6811340202).

Almost surely, 2^20434020603 is an apocalyptic number.

20434020603 is a deficient number, since it is larger than the sum of its proper divisors (6811340205).

20434020603 is an equidigital number, since it uses as much as digits as its factorization.

20434020603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6811340204.

The product of its (nonzero) digits is 3456, while the sum is 24.

The spelling of 20434020603 in words is "twenty billion, four hundred thirty-four million, twenty thousand, six hundred three".