20300103646 has 32 divisors (see below), whose sum is σ = 33265935360. Its totient is φ = 9260971104.

The previous prime is 20300103641. The next prime is 20300103701. The reversal of 20300103646 is 64630100302.

It is a self number, because there is not a number n which added to its sum of digits gives 20300103646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300103641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19051 + ... + 202393.

It is an arithmetic number, because the mean of its divisors is an integer number (1039560480).

Almost surely, 2^20300103646 is an apocalyptic number.

20300103646 is a deficient number, since it is larger than the sum of its proper divisors (12965831714).

20300103646 is a wasteful number, since it uses less digits than its factorization.

20300103646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183480.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20300103646 its reverse (64630100302), we get a palindrome (84930203948).

The spelling of 20300103646 in words is "twenty billion, three hundred million, one hundred three thousand, six hundred forty-six".