21414302040 has 128 divisors (see below), whose sum is σ = 66053880000. Its totient is φ = 5549856768.

The previous prime is 21414302033. The next prime is 21414302101. The reversal of 21414302040 is 4020341412.

It is a junction number, because it is equal to n+sod(n) for n = 21414301998 and 21414302016.

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, 4921786 + ... + 4926134.

Almost surely, 2^21414302040 is an apocalyptic number.

21414302040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21414302040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33026940000).

21414302040 is an abundant number, since it is smaller than the sum of its proper divisors (44639577960).

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

21414302040 is a wasteful number, since it uses less digits than its factorization.

21414302040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5509 (or 5505 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21414302040 its reverse (4020341412), we get a palindrome (25434643452).

The spelling of 21414302040 in words is "twenty-one billion, four hundred fourteen million, three hundred two thousand, forty".