21214036536413 has 32 divisors (see below), whose sum is σ = 24718788556800. Its totient is φ = 17832003266880.

The previous prime is 21214036536403. The next prime is 21214036536449. The reversal of 21214036536413 is 31463563041212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21214036536413 - 2⁶ = 21214036536349 is a prime.

It is a Duffinian number.

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 31 ways as a sum of consecutive naturals, for example, 35260706 + ... + 35857292.

It is an arithmetic number, because the mean of its divisors is an integer number (772462142400).

Almost surely, 2^{21214036536413} is an apocalyptic number.

It is an amenable number.

21214036536413 is a deficient number, since it is larger than the sum of its proper divisors (3504752020387).

21214036536413 is a wasteful number, since it uses less digits than its factorization.

21214036536413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597177.

The product of its (nonzero) digits is 311040, while the sum is 41.

Adding to 21214036536413 its reverse (31463563041212), we get a palindrome (52677599577625).

The spelling of 21214036536413 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred thirty-six thousand, four hundred thirteen".