21261421300462 has 16 divisors (see below), whose sum is σ = 36517841350272. Its totient is φ = 9094615062840.

The previous prime is 21261421300459. The next prime is 21261421300481. The reversal of 21261421300462 is 26400312416212.

It is a super-3 number, since 3×21261421300462³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1451878864 + ... + 1451893507.

It is an arithmetic number, because the mean of its divisors is an integer number (2282365084392).

Almost surely, 2^{21261421300462} is an apocalyptic number.

21261421300462 is a deficient number, since it is larger than the sum of its proper divisors (15256420049810).

21261421300462 is a wasteful number, since it uses less digits than its factorization.

21261421300462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2903772903.

The product of its (nonzero) digits is 27648, while the sum is 34.

Adding to 21261421300462 its reverse (26400312416212), we get a palindrome (47661733716674).

The spelling of 21261421300462 in words is "twenty-one trillion, two hundred sixty-one billion, four hundred twenty-one million, three hundred thousand, four hundred sixty-two".