21434616010432 has 112 divisors (see below), whose sum is σ = 43975658190240. Its totient is φ = 10360275148800.

The previous prime is 21434616010411. The next prime is 21434616010513. The reversal of 21434616010432 is 23401061643412.

It is a junction number, because it is equal to n+sod(n) for n = 21434616010391 and 21434616010400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1123339132 + ... + 1123358212.

It is an arithmetic number, because the mean of its divisors is an integer number (392639805270).

Almost surely, 2^{21434616010432} 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 21434616010432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21987829095120).

21434616010432 is an abundant number, since it is smaller than the sum of its proper divisors (22541042179808).

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

21434616010432 is a wasteful number, since it uses less digits than its factorization.

21434616010432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24090 (or 24080 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

Adding to 21434616010432 its reverse (23401061643412), we get a palindrome (44835677653844).

The spelling of 21434616010432 in words is "twenty-one trillion, four hundred thirty-four billion, six hundred sixteen million, ten thousand, four hundred thirty-two".