20430420012 has 36 divisors (see below), whose sum is σ = 51782050320. Its totient is φ = 6791877792.

The previous prime is 20430419993. The next prime is 20430420041. The reversal of 20430420012 is 21002403402.

20430420012 is a `hidden beast` number, since 20 + 430 + 4 + 200 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 747312 + ... + 774167.

Almost surely, 2^20430420012 is an apocalyptic number.

It is an amenable number.

20430420012 is an abundant number, since it is smaller than the sum of its proper divisors (31351630308).

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

20430420012 is a wasteful number, since it uses less digits than its factorization.

20430420012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521862 (or 1521857 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20430420012 its reverse (21002403402), we get a palindrome (41432823414).

The spelling of 20430420012 in words is "twenty billion, four hundred thirty million, four hundred twenty thousand, twelve".