21602422405 has 8 divisors (see below), whose sum is σ = 26309816352. Its totient is φ = 17023998288.

The previous prime is 21602422363. The next prime is 21602422409. The reversal of 21602422405 is 50422420612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21602422405 - 2¹⁵ = 21602389637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21602422409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32242087 + ... + 32242756.

It is an arithmetic number, because the mean of its divisors is an integer number (3288727044).

Almost surely, 2^21602422405 is an apocalyptic number.

It is an amenable number.

21602422405 is a deficient number, since it is larger than the sum of its proper divisors (4707393947).

21602422405 is an equidigital number, since it uses as much as digits as its factorization.

21602422405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64484915.

The product of its (nonzero) digits is 7680, while the sum is 28.

The spelling of 21602422405 in words is "twenty-one billion, six hundred two million, four hundred twenty-two thousand, four hundred five".