21633106430 has 32 divisors (see below), whose sum is σ = 42090904800. Its totient is φ = 7957901952.

The previous prime is 21633106399. The next prime is 21633106447. The reversal of 21633106430 is 3460133612.

It is a junction number, because it is equal to n+sod(n) for n = 21633106393 and 21633106402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274340 + ... + 344279.

It is an arithmetic number, because the mean of its divisors is an integer number (1315340775).

Almost surely, 2^21633106430 is an apocalyptic number.

21633106430 is a deficient number, since it is larger than the sum of its proper divisors (20457798370).

21633106430 is a wasteful number, since it uses less digits than its factorization.

21633106430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618908.

The product of its (nonzero) digits is 7776, while the sum is 29.

The spelling of 21633106430 in words is "twenty-one billion, six hundred thirty-three million, one hundred six thousand, four hundred thirty".