21424653363 has 16 divisors (see below), whose sum is σ = 28681558016. Its totient is φ = 14225470560.

The previous prime is 21424653353. The next prime is 21424653389. The reversal of 21424653363 is 36335642412.

It is not a de Polignac number, because 21424653363 - 2⁵ = 21424653331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21424653353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2814120 + ... + 2821722.

It is an arithmetic number, because the mean of its divisors is an integer number (1792597376).

Almost surely, 2^21424653363 is an apocalyptic number.

21424653363 is a deficient number, since it is larger than the sum of its proper divisors (7256904653).

21424653363 is a wasteful number, since it uses less digits than its factorization.

21424653363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11274.

The product of its digits is 311040, while the sum is 39.

The spelling of 21424653363 in words is "twenty-one billion, four hundred twenty-four million, six hundred fifty-three thousand, three hundred sixty-three".