20451350212 has 24 divisors (see below), whose sum is σ = 36006727680. Its totient is φ = 10163802240.

The previous prime is 20451350203. The next prime is 20451350221. The reversal of 20451350212 is 21205315402.

It is an interprime number because it is at equal distance from previous prime (20451350203) and next prime (20451350221).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 980589 + ... + 1001227.

It is an arithmetic number, because the mean of its divisors is an integer number (1500280320).

Almost surely, 2^20451350212 is an apocalyptic number.

It is an amenable number.

20451350212 is a deficient number, since it is larger than the sum of its proper divisors (15555377468).

20451350212 is a wasteful number, since it uses less digits than its factorization.

20451350212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22131 (or 22129 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 20451350212 its reverse (21205315402), we get a palindrome (41656665614).

The spelling of 20451350212 in words is "twenty billion, four hundred fifty-one million, three hundred fifty thousand, two hundred twelve".