21214036536486 has 8 divisors (see below), whose sum is σ = 42428073072984. Its totient is φ = 7071345512160.

The previous prime is 21214036536449. The next prime is 21214036536487. The reversal of 21214036536486 is 68463563041212.

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

21214036536486 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214036536487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1767836378035 + ... + 1767836378046.

It is an arithmetic number, because the mean of its divisors is an integer number (5303509134123).

Almost surely, 2^{21214036536486} is an apocalyptic number.

21214036536486 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21214036536486 is a wasteful number, since it uses less digits than its factorization.

21214036536486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535672756086.

The product of its (nonzero) digits is 4976640, while the sum is 51.

Adding to 21214036536486 its reverse (68463563041212), we get a palindrome (89677599577698).

The spelling of 21214036536486 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred thirty-six thousand, four hundred eighty-six".