20403004412 has 24 divisors (see below), whose sum is σ = 40809212640. Its totient is φ = 8743458240.

The previous prime is 20403004411. The next prime is 20403004451. The reversal of 20403004412 is 21440030402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403004411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516914 + ... + 554982.

It is an arithmetic number, because the mean of its divisors is an integer number (1700383860).

Almost surely, 2^20403004412 is an apocalyptic number.

It is an amenable number.

20403004412 is an abundant number, since it is smaller than the sum of its proper divisors (20406208228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20403004412 is a wasteful number, since it uses less digits than its factorization.

20403004412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57221 (or 57219 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20403004412 its reverse (21440030402), we get a palindrome (41843034814).

The spelling of 20403004412 in words is "twenty billion, four hundred three million, four thousand, four hundred twelve".