21414786912 has 192 divisors, whose sum is σ = 68015808000. Its totient is φ = 6529227264.

The previous prime is 21414786889. The next prime is 21414786977. The reversal of 21414786912 is 21968741412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 453573 + ... + 498555.

It is an arithmetic number, because the mean of its divisors is an integer number (354249000).

Almost surely, 2^21414786912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21414786912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34007904000).

21414786912 is an abundant number, since it is smaller than the sum of its proper divisors (46601021088).

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

21414786912 is a wasteful number, since it uses less digits than its factorization.

21414786912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45050 (or 45036 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The spelling of 21414786912 in words is "twenty-one billion, four hundred fourteen million, seven hundred eighty-six thousand, nine hundred twelve".