21214036536423 has 8 divisors (see below), whose sum is σ = 28287758419968. Its totient is φ = 14141502838584.

The previous prime is 21214036536403. The next prime is 21214036536449. The reversal of 21214036536423 is 32463563041212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21214036536423 - 2⁸ = 21214036536167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214036536403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297004765 + ... + 297076182.

It is an arithmetic number, because the mean of its divisors is an integer number (3535969802496).

Almost surely, 2^{21214036536423} is an apocalyptic number.

21214036536423 is a deficient number, since it is larger than the sum of its proper divisors (7073721883545).

21214036536423 is a wasteful number, since it uses less digits than its factorization.

21214036536423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594092853.

The product of its (nonzero) digits is 622080, while the sum is 42.

Adding to 21214036536423 its reverse (32463563041212), we get a palindrome (53677599577635).

The spelling of 21214036536423 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred thirty-six thousand, four hundred twenty-three".