21432000023412 has 48 divisors (see below), whose sum is σ = 56028619238592. Its totient is φ = 6319017204480.

The previous prime is 21432000023411. The next prime is 21432000023429.

It is a happy number.

21432000023412 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21432000023411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2194098313 + ... + 2194108080.

It is an arithmetic number, because the mean of its divisors is an integer number (1167262900804).

Almost surely, 2^{21432000023412} is an apocalyptic number.

21432000023412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21432000023412 is an abundant number, since it is smaller than the sum of its proper divisors (34596619215180).

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

21432000023412 is a wasteful number, since it uses less digits than its factorization.

21432000023412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388206448 (or 4388206446 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

It can be divided in two parts, 214320000 and 23412, that added together give a palindrome (214343412).

The spelling of 21432000023412 in words is "twenty-one trillion, four hundred thirty-two billion, twenty-three thousand, four hundred twelve".