20451350204 has 6 divisors (see below), whose sum is σ = 35789862864. Its totient is φ = 10225675100.

The previous prime is 20451350203. The next prime is 20451350221. The reversal of 20451350204 is 40205315402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20451350203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2556418772 + ... + 2556418779.

It is an arithmetic number, because the mean of its divisors is an integer number (5964977144).

Almost surely, 2^20451350204 is an apocalyptic number.

It is an amenable number.

20451350204 is a deficient number, since it is larger than the sum of its proper divisors (15338512660).

20451350204 is a wasteful number, since it uses less digits than its factorization.

20451350204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112837555 (or 5112837553 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20451350204 its reverse (40205315402), we get a palindrome (60656665606).

The spelling of 20451350204 in words is "twenty billion, four hundred fifty-one million, three hundred fifty thousand, two hundred four".