21468267626487 has 32 divisors (see below), whose sum is σ = 31272805589760. Its totient is φ = 12991809515520.

The previous prime is 21468267626467. The next prime is 21468267626587. The reversal of 21468267626487 is 78462676286412.

It is not a de Polignac number, because 21468267626487 - 2¹⁰ = 21468267625463 is a prime.

It is a super-2 number, since 2×21468267626487² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21468267626467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 500136208 + ... + 500179130.

It is an arithmetic number, because the mean of its divisors is an integer number (977275174680).

Almost surely, 2^{21468267626487} is an apocalyptic number.

21468267626487 is a deficient number, since it is larger than the sum of its proper divisors (9804537963273).

21468267626487 is a wasteful number, since it uses less digits than its factorization.

21468267626487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65023.

The product of its digits is 520224768, while the sum is 69.

The spelling of 21468267626487 in words is "twenty-one trillion, four hundred sixty-eight billion, two hundred sixty-seven million, six hundred twenty-six thousand, four hundred eighty-seven".