21214036536453 has 48 divisors (see below), whose sum is σ = 32383859788800. Its totient is φ = 13360238115840.

The previous prime is 21214036536449. The next prime is 21214036536487. The reversal of 21214036536453 is 35463563041212.

21214036536453 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 40 + 36 + 536 + 45 + 3 = 666.

It is not a de Polignac number, because 21214036536453 - 2² = 21214036536449 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21214036536399 and 21214036536408.

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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38601268 + ... + 39146978.

It is an arithmetic number, because the mean of its divisors is an integer number (674663745600).

Almost surely, 2^{21214036536453} is an apocalyptic number.

It is an amenable number.

21214036536453 is a deficient number, since it is larger than the sum of its proper divisors (11169823252347).

21214036536453 is a wasteful number, since it uses less digits than its factorization.

21214036536453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548962 (or 548959 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

Adding to 21214036536453 its reverse (35463563041212), we get a palindrome (56677599577665).

The spelling of 21214036536453 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred thirty-six thousand, four hundred fifty-three".