20911407412 has 12 divisors (see below), whose sum is σ = 41822814880. Its totient is φ = 8962031736.

The previous prime is 20911407397. The next prime is 20911407431. The reversal of 20911407412 is 21470411902.

20911407412 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373417962 + ... + 373418017.

Almost surely, 2^20911407412 is an apocalyptic number.

It is an amenable number.

20911407412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20911407412 is a wasteful number, since it uses less digits than its factorization.

20911407412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746835990 (or 746835988 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 20911407412 in words is "twenty billion, nine hundred eleven million, four hundred seven thousand, four hundred twelve".