20004212450 has 12 divisors (see below), whose sum is σ = 37207835250. Its totient is φ = 8001684960.

The previous prime is 20004212447. The next prime is 20004212479. The reversal of 20004212450 is 5421240002.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 14641726009 + 5362486441 = 121003^2 + 73229^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200042075 + ... + 200042174.

Almost surely, 2^20004212450 is an apocalyptic number.

20004212450 is a deficient number, since it is larger than the sum of its proper divisors (17203622800).

20004212450 is a wasteful number, since it uses less digits than its factorization.

20004212450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400084261 (or 400084256 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 20004212450 its reverse (5421240002), we get a palindrome (25425452452).

The spelling of 20004212450 in words is "twenty billion, four million, two hundred twelve thousand, four hundred fifty".