21622289429663 has 4 divisors (see below), whose sum is σ = 23285542462728. Its totient is φ = 19959036396600.

The previous prime is 21622289429659. The next prime is 21622289429669. The reversal of 21622289429663 is 36692498222612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21622289429663 - 2² = 21622289429659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21622289429596 and 21622289429605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21622289429669) 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, 831626516513 + ... + 831626516538.

It is an arithmetic number, because the mean of its divisors is an integer number (5821385615682).

Almost surely, 2^{21622289429663} is an apocalyptic number.

21622289429663 is a deficient number, since it is larger than the sum of its proper divisors (1663253033065).

21622289429663 is a wasteful number, since it uses less digits than its factorization.

21622289429663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663253033064.

The product of its digits is 53747712, while the sum is 62.

The spelling of 21622289429663 in words is "twenty-one trillion, six hundred twenty-two billion, two hundred eighty-nine million, four hundred twenty-nine thousand, six hundred sixty-three".