21429282626 has 16 divisors (see below), whose sum is σ = 32214591864. Its totient is φ = 10691103744.

The previous prime is 21429282617. The next prime is 21429282631. The reversal of 21429282626 is 62628292412.

21429282626 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 17436938401 + 3992344225 = 132049^2 + 63185^2 .

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, 4767236 + ... + 4771728.

Almost surely, 2^21429282626 is an apocalyptic number.

21429282626 is a deficient number, since it is larger than the sum of its proper divisors (10785309238).

21429282626 is a wasteful number, since it uses less digits than its factorization.

21429282626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9205.

The product of its digits is 331776, while the sum is 44.

The spelling of 21429282626 in words is "twenty-one billion, four hundred twenty-nine million, two hundred eighty-two thousand, six hundred twenty-six".