20500023246403 has 4 divisors (see below), whose sum is σ = 20500725836440. Its totient is φ = 20499320656368.

The previous prime is 20500023246401. The next prime is 20500023246463. The reversal of 20500023246403 is 30464232000502.

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 20500023246403 - 2¹ = 20500023246401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20500023246401) 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, 351251250 + ... + 351309607.

It is an arithmetic number, because the mean of its divisors is an integer number (5125181459110).

Almost surely, 2^{20500023246403} is an apocalyptic number.

20500023246403 is a deficient number, since it is larger than the sum of its proper divisors (702590037).

20500023246403 is an equidigital number, since it uses as much as digits as its factorization.

20500023246403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702590036.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 20500023246403 its reverse (30464232000502), we get a palindrome (50964255246905).

The spelling of 20500023246403 in words is "twenty trillion, five hundred billion, twenty-three million, two hundred forty-six thousand, four hundred three".