21414432032 has 48 divisors (see below), whose sum is σ = 48842543232. Its totient is φ = 9051886080.

The previous prime is 21414432031. The next prime is 21414432071. The reversal of 21414432032 is 23023441412.

It is a junction number, because it is equal to n+sod(n) for n = 21414431992 and 21414432010.

It is not an unprimeable number, because it can be changed into a prime (21414432031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638444 + ... + 671147.

It is an arithmetic number, because the mean of its divisors is an integer number (1017552984).

Almost surely, 2^21414432032 is an apocalyptic number.

It is an amenable number.

21414432032 is an abundant number, since it is smaller than the sum of its proper divisors (27428111200).

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

21414432032 is a wasteful number, since it uses less digits than its factorization.

21414432032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309681 (or 1309673 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21414432032 its reverse (23023441412), we get a palindrome (44437873444).

The spelling of 21414432032 in words is "twenty-one billion, four hundred fourteen million, four hundred thirty-two thousand, thirty-two".