21402441414 has 48 divisors (see below), whose sum is σ = 49111611120. Its totient is φ = 6712865280.

The previous prime is 21402441383. The next prime is 21402441421. The reversal of 21402441414 is 41414420412.

It is a happy number.

21402441414 is a `hidden beast` number, since 2 + 1 + 4 + 0 + 244 + 1 + 414 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2176569 + ... + 2186379.

It is an arithmetic number, because the mean of its divisors is an integer number (1023158565).

Almost surely, 2^21402441414 is an apocalyptic number.

21402441414 is an abundant number, since it is smaller than the sum of its proper divisors (27709169706).

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

21402441414 is a wasteful number, since it uses less digits than its factorization.

21402441414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16965 (or 16962 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 21402441414 its reverse (41414420412), we get a palindrome (62816861826).

The spelling of 21402441414 in words is "twenty-one billion, four hundred two million, four hundred forty-one thousand, four hundred fourteen".