21432144402024 has 64 divisors (see below), whose sum is σ = 53710646845440. Its totient is φ = 7126692431040.

The previous prime is 21432144401981. The next prime is 21432144402041. The reversal of 21432144402024 is 42020444123412.

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, 21341019 + ... + 22322709.

It is an arithmetic number, because the mean of its divisors is an integer number (839228856960).

Almost surely, 2^{21432144402024} is an apocalyptic number.

21432144402024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21432144402024 is an abundant number, since it is smaller than the sum of its proper divisors (32278502443416).

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

21432144402024 is a wasteful number, since it uses less digits than its factorization.

21432144402024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983910 (or 983906 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 21432144402024 its reverse (42020444123412), we get a palindrome (63452588525436).

The spelling of 21432144402024 in words is "twenty-one trillion, four hundred thirty-two billion, one hundred forty-four million, four hundred two thousand, twenty-four".