20400200003 has 8 divisors (see below), whose sum is σ = 21483387600. Its totient is φ = 19317961728.

The previous prime is 20400199987. The next prime is 20400200011. The reversal of 20400200003 is 30000200402.

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 20400200003 - 2⁴ = 20400199987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20400200033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192998 + ... + 279371.

It is an arithmetic number, because the mean of its divisors is an integer number (2685423450).

Almost surely, 2^20400200003 is an apocalyptic number.

20400200003 is a deficient number, since it is larger than the sum of its proper divisors (1083187597).

20400200003 is a wasteful number, since it uses less digits than its factorization.

20400200003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474661.

The product of its (nonzero) digits is 48, while the sum is 11.

Adding to 20400200003 its reverse (30000200402), we get a palindrome (50400400405).

The spelling of 20400200003 in words is "twenty billion, four hundred million, two hundred thousand, three".